Cita APA (7th ed.)

Wye, K. R. (1991). The illustrated encyclopedia of shells. Quarto Publishing.

Cita Chicago (17th ed.)

Wye, Kenneth R. The Illustrated Encyclopedia of Shells. London: Quarto Publishing, 1991.

Cita MLA (9th ed.)

Wye, Kenneth R. The Illustrated Encyclopedia of Shells. Quarto Publishing, 1991.