Gaya APA
Hartley, C.W.S.. (1977).
The oil palm .
London:
Longman.
Gaya Chicago
Hartley, C.W.S..
The oil palm.
London:
Longman,
1977.
Tesis.
Gaya MLA
Hartley, C.W.S..
The oil palm.
London:
Longman,
1977.
Tesis.
Gaya Turabian
Hartley, C.W.S..
The oil palm.
London:
Longman,
1977.
Tesis.