Cita APA (7a ed.)
Land, H. C. (1970). Birds of Guatemala. Livingston Publishing Company.
Cita Chicago Style (17a ed.)
Land, Hugh C. Birds of Guatemala. Pennsylvania: Livingston Publishing Company, 1970.
Cita MLA (9a ed.)
Land, Hugh C. Birds of Guatemala. Livingston Publishing Company, 1970.
Precaución: Estas citas no son 100% exactas.