Penggayaan APA
SIMMONDS, N.W.. (1979).
Principles of crop improvement .
London:
Longman.
Chicago Style
SIMMONDS, N.W..
Principles of crop improvement.
London:
Longman,
1979.
Buku.
MLA Style
SIMMONDS, N.W..
Principles of crop improvement.
London:
Longman,
1979.
Buku.
Turabian Style
SIMMONDS, N.W..
Principles of crop improvement.
London:
Longman,
1979.
Buku.