Gaya APA

Practice and Progress : An Integrated Course for Pre-Intermediate Students. (1967). London: Longman Group.

Gaya Chicago

Practice and Progress : An Integrated Course for Pre-Intermediate Students. . London: Longman Group, 1967. Text.

Gaya MLA

Practice and Progress : An Integrated Course for Pre-Intermediate Students. . London: Longman Group, 1967. Text.

Gaya Turabian

Practice and Progress : An Integrated Course for Pre-Intermediate Students. London: Longman Group, 1967. Print.