APA (7th ed.) Citation

Trautschold, M., Ritchie, R., & Mazo, G. (2011). iPhone 4S Made Simple. Apress.

Chicago Style (17th ed.) Citation

Trautschold, Martin, Rene Ritchie, and Gary Mazo. IPhone 4S Made Simple. Berkeley, CA: Apress, 2011.

MLA (8th ed.) Citation

Trautschold, Martin, et al. IPhone 4S Made Simple. Apress, 2011.

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