APA (7th ed.) Citation

Dudley, R. H. (1953). Sea shells. Thomas Y. Crowell.

Chicago Style (17th ed.) Citation

Dudley, Ruth H. Sea Shells. Nueva York: Thomas Y. Crowell, 1953.

MLA (9th ed.) Citation

Dudley, Ruth H. Sea Shells. Thomas Y. Crowell, 1953.

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