Gaya APA
Grassiand ecology. (1971).
Oxford:
Oxford University Press.
Gaya Chicago
Grassiand ecology.
.
Oxford:
Oxford University Press,
1971.
Buku.
Gaya MLA
Grassiand ecology.
.
Oxford:
Oxford University Press,
1971.
Buku.
Gaya Turabian
Grassiand ecology.
Oxford:
Oxford University Press,
1971.
Buku.