APA (7th ed.) Citation

Snell, R. R. (2002). Iceland gull: Larus glaucoides : thayer's gull : larus thayeri. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Snell, Richard R. Iceland Gull: Larus Glaucoides : Thayer's Gull : Larus Thayeri. Philadelphia, Pa.: Birds of North America, Inc., 2002.

MLA (9th ed.) Citation

Snell, Richard R. Iceland Gull: Larus Glaucoides : Thayer's Gull : Larus Thayeri. Birds of North America, Inc., 2002.