Penggayaan APA
WIDTSOE, John A.. ([s.a.]).
Asystem of agriculture for countries under low rainfall .
[s.l.]:
Hard Press.
Chicago Style
WIDTSOE, John A..
Asystem of agriculture for countries under low rainfall.
[s.l.]:
Hard Press,
[s.a.].
Buku.
MLA Style
WIDTSOE, John A..
Asystem of agriculture for countries under low rainfall.
[s.l.]:
Hard Press,
[s.a.].
Buku.
Turabian Style
WIDTSOE, John A..
Asystem of agriculture for countries under low rainfall.
[s.l.]:
Hard Press,
[s.a.].
Buku.