Gaya APA

ristiyanto, S., zuhri, M, S. (2010). english grammar for freshmen (cet.1). semarang: rasail media group.

Gaya MLA

ristiyanto, Sugeng., zuhri, Muhammad, Saifuddin. "english grammar for freshmen". cet.1 semarang: rasail media group, 2010. Text.