Gaya APA

Ary, D. et al (2014). Introduction to Research in Education ED : 9 (ED-9). USA: USA : Wadsworth Cengange Learning,2014.

Gaya MLA

Ary, Donald. et al. "Introduction to Research in Education ED : 9". ED-9 USA: USA : Wadsworth Cengange Learning,2014, 2014. Text.