Gaya APA
English for specific purposes: Agriculture. (1990).
Jakarta:
Gramedia.
Gaya Chicago
English for specific purposes: Agriculture.
.
Jakarta:
Gramedia,
1990.
Buku.
Gaya MLA
English for specific purposes: Agriculture.
.
Jakarta:
Gramedia,
1990.
Buku.
Gaya Turabian
English for specific purposes: Agriculture.
Jakarta:
Gramedia,
1990.
Buku.