Gaya APA

Purwanto, E. et al (2001). English For Specifik Porposes : English For Govermnental Science (Ed.1 cet.2). Jepang: UMM Press.

Gaya MLA

Purwanto, Edi. et al. "English For Specifik Porposes : English For Govermnental Science ". Ed.1 cet.2 Jepang: UMM Press, 2001. Buku Teks.