Johnson, J. G., Boucot, A. J., & Murphy, M. A. (1973). Pridolian and early Gedinnian age brachiopods from the Roberts Mountains formation of central Nevada. Univ. of California Press.
Chicago-Zitierstil (17. Ausg.)Johnson, John G., Arthur J. Boucot, und Michael A. Murphy. Pridolian and Early Gedinnian Age Brachiopods from the Roberts Mountains Formation of Central Nevada. Berkeley u.a: Univ. of California Press, 1973.
MLA-Zitierstil (9. Ausg.)Johnson, John G., et al. Pridolian and Early Gedinnian Age Brachiopods from the Roberts Mountains Formation of Central Nevada. Univ. of California Press, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.