Gaya APA

Methold, K, E., et.all., C, T, H. (2001). Gogo Loves English 1 . Hongkong: Longman Asia ELT.

Gaya MLA

Methold, Ken., Et.all., et.all., Chan, Tak, Hung,. "Gogo Loves English 1". Hongkong: Longman Asia ELT, 2001. Text / Book.