Pratt, B. R. (1992). Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada. Canadian Soc. of Petroleum Geologists u.a.
Chicago-Zitierstil (17. Ausg.)Pratt, Brian R. Trilobites of the Marjuman and Steptoean Stages (Upper Cambrian), Rabbitkettle Formation, Southern Mackenzie Mountains, Northwest Canada. Calgary, Alberta: Canadian Soc. of Petroleum Geologists u.a, 1992.
MLA-Zitierstil (9. Ausg.)Pratt, Brian R. Trilobites of the Marjuman and Steptoean Stages (Upper Cambrian), Rabbitkettle Formation, Southern Mackenzie Mountains, Northwest Canada. Canadian Soc. of Petroleum Geologists u.a, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.