Gaya APA
Plants and society. (1999).
Boston:
Mc Graw-Hill.
Gaya Chicago
Plants and society.
.
Boston:
Mc Graw-Hill,
1999.
Buku.
Gaya MLA
Plants and society.
.
Boston:
Mc Graw-Hill,
1999.
Buku.
Gaya Turabian
Plants and society.
Boston:
Mc Graw-Hill,
1999.
Buku.