APA (7th ed.) Citation

(2010). Leap year ([Engl. Orig.-fassung].). Optimum Releasing.

Chicago Style (17th ed.) Citation

Leap Year. [Engl. Orig.-fassung]. [S.l.]: Optimum Releasing, 2010.

MLA (9th ed.) Citation

Leap Year. [Engl. Orig.-fassung]. Optimum Releasing, 2010.

Warning: These citations may not always be 100% accurate.