Svensson, R. (1935). Studies on human intestinal protozoa: Especially with regard to their demonstrability and the connexion between their distribution and hygienic conditions. Ekenäs tryckeri a. b..

Svensson, Ruth. Studies on Human Intestinal Protozoa: Especially with Regard to Their Demonstrability and the Connexion Between Their Distribution and Hygienic Conditions. [Ekenäs: Ekenäs tryckeri a. b., 1935.

Svensson, Ruth. Studies on Human Intestinal Protozoa: Especially with Regard to Their Demonstrability and the Connexion Between Their Distribution and Hygienic Conditions. Ekenäs tryckeri a. b., 1935.