APA (7th ed.) Citation

Null, G. (2003). The 7 steps to overcoming depression and anxiety. iBook.

Chicago Style (17th ed.) Citation

Null, Gary. The 7 Steps to Overcoming Depression and Anxiety. New York: iBook, 2003.

MLA (9th ed.) Citation

Null, Gary. The 7 Steps to Overcoming Depression and Anxiety. iBook, 2003.

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