APA (7th ed.) Citation

Ludvigsen, R., & Tripp, R. P. (1990). Silurian trilobites from the northern Yukon Territory. Royal Ontario Museum.

Chicago Style (17th ed.) Citation

Ludvigsen, Rolf, and Ronald P. Tripp. Silurian Trilobites from the Northern Yukon Territory. Toronto: Royal Ontario Museum, 1990.

MLA (8th ed.) Citation

Ludvigsen, Rolf, and Ronald P. Tripp. Silurian Trilobites from the Northern Yukon Territory. Royal Ontario Museum, 1990.

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