Gaya APA
Geus, Jan G. de.. (1973).
Fertilizer guide for the tropics and subtropics / Jan G. de Geus (ed.2).
Zurich:
Centre d,Efude de l\'azote.
Gaya Chicago
Geus, Jan G. de..
Fertilizer guide for the tropics and subtropics / Jan G. de Geus.
ed.2
Zurich:
Centre d,Efude de l\'azote,
1973.
Text.
Gaya MLA
Geus, Jan G. de..
Fertilizer guide for the tropics and subtropics / Jan G. de Geus.
ed.2
Zurich:
Centre d,Efude de l\'azote,
1973.
Text.
Gaya Turabian
Geus, Jan G. de..
Fertilizer guide for the tropics and subtropics / Jan G. de Geus.
ed.2
Zurich:
Centre d,Efude de l\'azote,
1973.
Print.