Gaya APA

Richards, D, J, C., Markus", D, I, M. (1980). Creative English For Indonesia : Workbook Two . Inggris: Oxford University Press.

Gaya MLA

Richards, Dr., J., C.., Markus", Drs., I., Made. "Creative English For Indonesia : Workbook Two". Inggris: Oxford University Press, 1980. Text.