All courses were made with the assistance of volunteer translators, voice actors, and language enthusiasts. This project would not be possible without their generous assistance in helping others to learn their languages.
Additional content comes from Omniglot and Forvo which are both amazing resources with similar visions. Anki is the platform these courses are made with and I don't claim any of the content from these respective websites. I highly recommend checking them out yourself. Any extra language specific borrowings will be mentioned in the deck readmes.