Gaya APA
Etherton, A.R.B.. (2006).
Objective English tests : A.R.B. Etherton (Cet.19).
Yogyakarta:
Kanisius.
Gaya Chicago
Etherton, A.R.B..
Objective English tests : A.R.B. Etherton.
Cet.19
Yogyakarta:
Kanisius,
2006.
Textbook.
Gaya MLA
Etherton, A.R.B..
Objective English tests : A.R.B. Etherton.
Cet.19
Yogyakarta:
Kanisius,
2006.
Textbook.
Gaya Turabian
Etherton, A.R.B..
Objective English tests : A.R.B. Etherton.
Cet.19
Yogyakarta:
Kanisius,
2006.
Textbook.