Gaya APA

al., E. et al (1994,1996). Ekonomi Jilid 1 (Ed. 12). Jakarta. Erlangga: Gadjah Mada University Press.

Gaya MLA

al., Et. et al. "Ekonomi Jilid 1". Ed. 12 Jakarta. Erlangga: Gadjah Mada University Press, 1994,1996. Text.