Gaya APA

Halvorson, H, G. (2012). 9 Things Successful People do Differently (cet. 1-Ed. 1). Amerika: Harvard Business Review Press.

Gaya MLA

Halvorson, Haidi, Grant. "9 Things Successful People do Differently". cet. 1-Ed. 1 Amerika: Harvard Business Review Press, 2012. Buku Teks.