Gaya APA

Nawawi, H. et al (1992,1982,1994,1991,2005). Mekanika Tanah (Ed. 4,Ed. 1). Jakarta: Erlangga.

Gaya MLA

Nawawi, Hadari. et al. "Mekanika Tanah". Ed. 4,Ed. 1 Jakarta: Erlangga, 1992,1982,1994,1991,2005. Text.