APA (7th ed.) Citation

(2003). Who moved my cheese?: The change program-part 1: changing the way you look at change. Spencer Johnson.

Chicago Style (17th ed.) Citation

Who Moved My Cheese?: The Change Program-part 1: Changing the Way You Look at Change. USA: Spencer Johnson, 2003.

MLA (8th ed.) Citation

Who Moved My Cheese?: The Change Program-part 1: Changing the Way You Look at Change. Spencer Johnson, 2003.