APA (7th ed.) Citation

Lucretius Carus, T., & Geer, R. M. (1965). On nature. Bobbs-Merrill.

Chicago Style (17th ed.) Citation

Lucretius Carus, Titus, and Russel M. Geer. On Nature. Indianapolis: Bobbs-Merrill, 1965.

MLA (9th ed.) Citation

Lucretius Carus, Titus, and Russel M. Geer. On Nature. Bobbs-Merrill, 1965.