Gaya APA

8333. (1). : Grasindo.

Gaya Chicago

8333. english for real communication. : Grasindo, 1. 19/C/STO/087.

Gaya MLA

8333. english for real communication. : Grasindo, 1. 19/C/STO/087.

Gaya Turabian

8333. : Grasindo, 1. 19/C/STO/087.