Cita APA

Arnold, C. A. n. 1., & Arnold, C. A. n. 1. (1947). An introduction to paleobotany. New York, New York: McGraw-Hill.

Citación estilo Chicago

Arnold, Chester Arthur n. 1901, y Chester Arthur n. 1901 Arnold. An Introduction to Paleobotany. New York, New York: McGraw-Hill, 1947.

Cita MLA

Arnold, Chester Arthur n. 1901, y Chester Arthur n. 1901 Arnold. An Introduction to Paleobotany. New York, New York: McGraw-Hill, 1947.