Gaya APA

al., E. et al (1993,1999,2002,2011). Kalkulus (Ed. 3,Ed. 1,-). Jakarta: Erlangga.

Gaya MLA

al., Et. et al. "Kalkulus". Ed. 3,Ed. 1,- Jakarta: Erlangga, 1993,1999,2002,2011. Text.