Gaya APA
Alexander, L.G. (1972).
Practice and progress :an integrated course for pre-intermediate students .
London:
Longman.
Gaya Chicago
Alexander, L.G.
Practice and progress :an integrated course for pre-intermediate students.
London:
Longman,
1972.
Text.
Gaya MLA
Alexander, L.G.
Practice and progress :an integrated course for pre-intermediate students.
London:
Longman,
1972.
Text.
Gaya Turabian
Alexander, L.G.
Practice and progress :an integrated course for pre-intermediate students.
London:
Longman,
1972.
Print.