Gaya APA
Potter, J., Kwok, T.
(2002).
Gogo loves English 6, Workbook
.
Hongkong:
Longman Asia ELT.
Gaya MLA
Potter, John., Kwok, Tony.
"Gogo loves English 6, Workbook".
Hongkong:
Longman Asia ELT,
2002.
Text / Book.