Gaya APA

Pramono, P, R., Sudiarto, O, H. (2006, 2007). 30 (tigapuluh) menit essay writing: writing is easy (Ed.1). : Erlangga.

Gaya MLA

Pramono, Peni, R.., Sudiarto, Oktaviani, Hastu. "30 (tigapuluh) menit essay writing: writing is easy". Ed.1 : Erlangga, 2006, 2007. Textbook.