Powders, Vernon N.. "Altitudinal Distribution of the Protozoan Cepedietta michiganesis in the Salamanders Plethodon glutinosus and Plethodon jordani." American Midland Naturalist 83, no. 2 (1970): 393-403.

Goodwin, James T., and Vernon N. Powders. "A Range Extension for the Mormon Cricket, Anabrus Sinplex." Annals of the Entomological Society of America 63, no. 2 (1970): 623-624.

Powders, Vernon N.. "Altitudinal Distribution of Cepedietta (=Haptophrya) michiganensis (Woodhead), 1928 (Protozoa: Cilliata)." The ASB Bulletin 14, no. 2 (1967): 38.

Powders, Vernon N.. "Altitudinal Distribution of the Astomatous Ciliate Cepedietta Michiganensis (Woodhead) in a New Host, Plethodon Jordani Blatchley." Transactions of the Amerrtican Microscopical Society 83, no. 3 (1967): 336-338.

Powders, Vernon N.. "A New Host Record for Cepedietta (=Haptophrya) michiganensis (Woodhead), 1928 (Protozoa: Ciliata)." The ASB Bulletin 14, no. 2 (1967): 38.