APA (7th ed.) Citation

Gibbs, M. A. (1973). The sea urchins. White Lion Publishers.

Chicago Style (17th ed.) Citation

Gibbs, Mary Ann. The Sea Urchins. London: White Lion Publishers, 1973.

MLA (8th ed.) Citation

Gibbs, Mary Ann. The Sea Urchins. White Lion Publishers, 1973.

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