Cita APA (7th ed.)

Woodward, F. (1993). Shells: The new compact study and identifier. Chartwell Books.

Cita Chicago (17th ed.)

Woodward, Fred. Shells: The New Compact Study and Identifier. Secausus, NJ: Chartwell Books, 1993.

Cita MLA (9th ed.)

Woodward, Fred. Shells: The New Compact Study and Identifier. Chartwell Books, 1993.