APA Style

Keenan, F., Tejada, M. (1985). Tropical timber for building materials in the andean group countries of South America . Canada: International Development Research Centre..

MLA Style

Keenan, F.J.., Tejada, Marcelo. "Tropical timber for building materials in the andean group countries of South America". Canada: International Development Research Centre., 1985. Buku.