Gaya APA

al., E. et al (1985,1982,1992,1990,1987,1995). Ilmu Tanah (Ed. Rev,Ed. 1). Bandung: Angkasa.

Gaya MLA

al., Et. et al. "Ilmu Tanah". Ed. Rev,Ed. 1 Bandung: Angkasa, 1985,1982,1992,1990,1987,1995. Text.