Gaya APA

p.rein, D. (1985). grolier advanced english course 5 . the United States of America: [s.l].Grolier International. Inc.

Gaya MLA

p.rein, David. "grolier advanced english course 5". the United States of America: [s.l].Grolier International. Inc, 1985. Koleksi Elektronik.