Gaya APA

Sumarah, W, Y, D, W, N., stengel, R. (1997). Mandela’s way (Cet. 1). Jakarta: Richard stengel.

Gaya MLA

Sumarah, Widyastuti,, Yani, Dan, Wiyati,, Nining., stengel, Richard. "Mandela’s way". Cet. 1 Jakarta: Richard stengel, 1997. Text.