Eckert, J. D. (1984). Early Llandovery Crinoids and Stelleroids from the Cataract Group -Lower Silurian- in Southern Ontario, Canada. Royal Ontario Museum.
Chicago Style (17th ed.) CitationEckert, James D. Early Llandovery Crinoids and Stelleroids from the Cataract Group -Lower Silurian- in Southern Ontario, Canada. Toronto: Royal Ontario Museum, 1984.
MLA (9th ed.) CitationEckert, James D. Early Llandovery Crinoids and Stelleroids from the Cataract Group -Lower Silurian- in Southern Ontario, Canada. Royal Ontario Museum, 1984.
Warning: These citations may not always be 100% accurate.