Fritz, U., Schmidt, C. and Ernst, C.H. 2011. Competing generic concepts for Blanding’s, Pacific and European pond turtles (Emydoidea, Actinemys and Emys)—Which is best?. Zootaxa. 2791, 1 (Mar. 2011), 41–53. DOI:https://doi.org/10.11646/zootaxa.2791.1.3.