Gaya APA

Maurer, Jay. (). Focus An Grammar . Longman: 2000.

Gaya Chicago

Maurer, Jay. Focus An Grammar. Longman: 2000, . .

Gaya MLA

Maurer, Jay. Focus An Grammar. Longman: 2000, . .

Gaya Turabian

Maurer, Jay. Focus An Grammar. Longman: 2000, . .