APA (7th ed.) Citation

Ludvigsen, R. (1982). Upper Cambrian and Lower Ordovician trilobite biostratigraphy of the Rabbitkettle Formation, western District of Mackenzie. Royal Ontario Museum.

Chicago Style (17th ed.) Citation

Ludvigsen, Rolf. Upper Cambrian and Lower Ordovician Trilobite Biostratigraphy of the Rabbitkettle Formation, Western District of Mackenzie. Toronto, Canada: Royal Ontario Museum, 1982.

MLA (8th ed.) Citation

Ludvigsen, Rolf. Upper Cambrian and Lower Ordovician Trilobite Biostratigraphy of the Rabbitkettle Formation, Western District of Mackenzie. Royal Ontario Museum, 1982.

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