A card can cite up to 10 sources, each with the pages it comes from. You can then open the source right at those pages, from the card or in the middle of a session.
Cite a source
At the bottom of the card editor, choose Add source. The list shows the sources of the card’s topic and of the topics it’s in, the nearest first. Type to search, then click one or press Enter. You can also upload a file, add a link or write a text right there, and it’s added to the topic and cited at once.
When you pick a PDF, you can say which pages the card comes from, such as 4 to 9. Leave the pages empty to cite all of it.
Once a card cites something, the same button shows the source’s title, or how many sources it cites. It opens the list, where you can change a source’s pages, open it, or remove it.
You can also drop files on the editor. While you drag, a place below the fields says Drop here to add as a source. Files dropped there are added to the topic and cited by the card. An image dropped on a side of the card goes on the card instead.
Cards from the assistant
When the assistant writes cards from your sources, each card cites the source it comes from, with the pages, just as if you had picked them. See Making cards with the assistant.
Keep a source for the next card
When you write several cards in a row, they usually come from the same source. So while you’re adding cards, a source you pick is kept for the next card, shown with a pin. A new card that starts with kept sources says “Sources kept from your last card” below its fields.
To stop keeping a source, open it in the list and turn off Keep for the next card. Kept sources are forgotten once you close the editor. Editing an existing card never keeps anything.
On the card
Each card shows the sources it cites at its bottom. Click one to open it at the first page cited. Only you see them: on a topic you share or publish, others see the cards without their sources.
While studying
Once you’ve revealed a card’s answer, a Source button appears above it. Click it (or press S) to read the source beside the session, at the page the card cites. Close it to rate the card as usual. The time you spend reading doesn’t count toward how long you took to answer. The button only appears after you reveal the answer, so it never gives anything away.
If you’d rather not see sources while studying, turn off Sources in the session’s Options.
Moving cards with sources
A card can only cite sources from its own topic and the topics it’s in. If you move a card away from a source it cites, it stops citing that source.