^Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. (Apalone spinifera emoryi, p. 83).
^"Apalone spinifera". The Reptiles Database. www.reptile-database.org.
Further reading
Agassiz L (1857). Contributions to the Natural History of the United States of America. Vol. I. Boston: Little, Brown and Company. li + 452 pp. (Aspidonectes emoryi, new species, pp. 407–408).
Boulenger GA (1889). Catalogue of the Chelonians, Rhynchocephalians, and Crocodiles in the British Museum (Natural History). New Edition. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). x + 311 pp. + Plates I–III. (Trionyx emoryi, p. 258).
Powell R, Conant R, Collins JT 2016). Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition. Boston and New York: Houghton Mifflin Harcourt. xiv + 494 pp., 47 color plates, 207 figures. ISBN978-0-544-12997-9. (Apalone spinifera emoryi, p. 233).
Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN0-307-13666-3 (paperback), ISBN0-307-47009-1 (hardcover). (Trionyx spiniferus emoryi, pp. 32–33).
Stebbins RC (2003). A Field Guide to Western Reptiles and Amphibians, Third Edition. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin Company. xiii + 533 pp., 56 color plates. ISBN978-0-395-98272-3. (Trionyx spiniferus emoryi, p. 262).