Gaya APA
Pittman, G.A.. (1961).
Preparatory Technical English .
London:
Longmans.
Gaya Chicago
Pittman, G.A..
Preparatory Technical English.
London:
Longmans,
1961.
.
Gaya MLA
Pittman, G.A..
Preparatory Technical English.
London:
Longmans,
1961.
.
Gaya Turabian
Pittman, G.A..
Preparatory Technical English.
London:
Longmans,
1961.
.