Gaya APA

Alexander, L, G. (1988). Practice and Progress: An Integrated Course for Pre-Intermediate Students (Cet.3). London: Penerbit Kanisius.

Gaya MLA

Alexander, L., G.. "Practice and Progress: An Integrated Course for Pre-Intermediate Students". Cet.3 London: Penerbit Kanisius, 1988. .