Gaya APA
Verhagen,Koenraad. (1984).
Co-operation for Survival .
Amsterdam:
Royal Tropical Institute.
Gaya Chicago
Verhagen,Koenraad.
Co-operation for Survival.
Amsterdam:
Royal Tropical Institute,
1984.
Text.
Gaya MLA
Verhagen,Koenraad.
Co-operation for Survival.
Amsterdam:
Royal Tropical Institute,
1984.
Text.
Gaya Turabian
Verhagen,Koenraad.
Co-operation for Survival.
Amsterdam:
Royal Tropical Institute,
1984.
Print.