APA Style
Geus, De J.G.. ().
Fertilizer Guide 1970 for Food Grains in the Tropics and Subtropics (9).
:
.
Chicago Style
Geus, De J.G..
Fertilizer Guide 1970 for Food Grains in the Tropics and Subtropics.
9
:
,
.
Hard Copy.
MLA Style
Geus, De J.G..
Fertilizer Guide 1970 for Food Grains in the Tropics and Subtropics.
9
:
,
.
Hard Copy.
Turabian Style
Geus, De J.G..
Fertilizer Guide 1970 for Food Grains in the Tropics and Subtropics.
9
:
,
.
Hard Copy.