Gaya APA

Harkness, J, A, (. (2010). Survey Methods In Multinational, Multiregional, and Multicultural Contexts . New Jersey: John Wiley & Sons, Inc..

Gaya MLA

Harkness, Janet, A, (a.o). "Survey Methods In Multinational, Multiregional, and Multicultural Contexts". New Jersey: John Wiley & Sons, Inc., 2010. Text.