APA

Barber S. A., Cain J. C., Carolus R. L., Cook J. A. & Donald L. (1964). Hunger signs in crops. New York, New York, United States: David McKay Company.

Chicago

Barber Stanley A, Cain John C, Carolus R L, Cook James A and Donald Leroy. 1964. Hunger signs in crops. New York, New York, United States: David McKay Company.

Harvard

Barber S. A., Cain J. C., Carolus R. L., Cook J. A. and Donald L. (1964). Hunger signs in crops. New York, New York, United States: David McKay Company.

MLA

Barber Stanley A, Cain John C, Carolus R L, Cook James A and Donald Leroy. Hunger signs in crops. New York, New York, United States: David McKay Company. 1964.