Hill, L. (1995). The world's most beautiful seashells. Carmichael Publications.
Cita Chicago (17th ed.)Hill, Leonard. The World's Most Beautiful Seashells. Tampa: Carmichael Publications, 1995.
Cita MLA (9th ed.)Hill, Leonard. The World's Most Beautiful Seashells. Carmichael Publications, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.