Food and Agriculture Organization of the United Nations. Working Group on Forest Insects and Diseases, Davidson, A. G., & Prentice, R. M. (1967). Important forest insects and diseases of mutual concern to Canada, the United States and Mexico. Queen's Printer.
Chicago (17e ed.) BronvermeldingFood and Agriculture Organization of the United Nations. Working Group on Forest Insects and Diseases, A. G. Davidson, en R. M. Prentice. Important Forest Insects and Diseases of Mutual Concern to Canada, the United States and Mexico. [Ottawa: Queen's Printer, 1967.
MLA (8e ed.) BronvermeldingFood and Agriculture Organization of the United Nations. Working Group on Forest Insects and Diseases, et al. Important Forest Insects and Diseases of Mutual Concern to Canada, the United States and Mexico. Queen's Printer, 1967.