APA-Zitierstil (7. Ausg.)

(1930). Conservation of our natural resources: Based on Van Hise's: The conservation of natural resources in the United States (New ed.). Macmillan.

Chicago-Zitierstil (17. Ausg.)

Conservation of Our Natural Resources: Based on Van Hise's: The Conservation of Natural Resources in the United States. New ed. New York: Macmillan, 1930.

MLA-Zitierstil (9. Ausg.)

Conservation of Our Natural Resources: Based on Van Hise's: The Conservation of Natural Resources in the United States. New ed. Macmillan, 1930.