Gaya APA

Alexander,L.G. (1975). First things first:students book / L.G.Alexander . Yogyakarta: Kanisius.

Gaya Chicago

Alexander,L.G. First things first:students book / L.G.Alexander. Yogyakarta: Kanisius, 1975. Text.

Gaya MLA

Alexander,L.G. First things first:students book / L.G.Alexander. Yogyakarta: Kanisius, 1975. Text.

Gaya Turabian

Alexander,L.G. First things first:students book / L.G.Alexander. Yogyakarta: Kanisius, 1975. Print.