Gaya APA

Santrock, J, W, S, J, W. (2008). Study guide to accompany life-span development.-- (Ed. 11.--). America: McGraw-Hill.

Gaya MLA

Santrock, John, W., Santrock,, John, W.. "Study guide to accompany life-span development.--". Ed. 11.-- America: McGraw-Hill, 2008. Buku.