APA (7th ed.) Citation

Axelrod, D. I. (1950). Studies in late Tertiary paleobotany. [publisher not identified].

Chicago Style (17th ed.) Citation

Axelrod, Daniel I. Studies in Late Tertiary Paleobotany. Washington: [publisher not identified], 1950.

MLA (9th ed.) Citation

Axelrod, Daniel I. Studies in Late Tertiary Paleobotany. [publisher not identified], 1950.