APA Citation

Hartman, G., & Hartman, G. (1944). These United States and how they came to be. New York, New York: Macmillan.

Chicago Style Citation

Hartman, Gertrude, and Gertrude Hartman. These United States and How They Came to Be. New York, New York: Macmillan, 1944.

MLA Citation

Hartman, Gertrude, and Gertrude Hartman. These United States and How They Came to Be. New York, New York: Macmillan, 1944.

Warning: These citations may not always be 100% accurate.