APA

Arnold C. A., . (1947). Introduction to paleobotany. : McGraw-Hill Book Co., New York.

Chicago

Arnold Chester A, . 1947. Introduction to paleobotany. : McGraw-Hill Book Co., New York.

Harvard

Arnold C. A., . (1947). Introduction to paleobotany. : McGraw-Hill Book Co., New York.

MLA

Arnold Chester A, . Introduction to paleobotany. : McGraw-Hill Book Co., New York. 1947.