APA (7th ed.) Citation

Ladd, H. S. (1970). Eocene mollusks from Eua, Tonga. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Ladd, Harry S. Eocene Mollusks from Eua, Tonga. Washington: U.S. Govt. Print. Off, 1970.

MLA (9th ed.) Citation

Ladd, Harry S. Eocene Mollusks from Eua, Tonga. U.S. Govt. Print. Off, 1970.

Warning: These citations may not always be 100% accurate.