Noyce, A. G. (1973). The morphology and histology of the genital system of Theba pisana (Müller) (Pulmonata: Helicidae). Universiteit van Stellenbosch.
Lua i Stíl Chicago (17ú heag.)Noyce, A. G. The Morphology and Histology of the Genital System of Theba Pisana (Müller) (Pulmonata: Helicidae). Stellenbosch: Universiteit van Stellenbosch, 1973.
Lua MLA (8ú heag.)Noyce, A. G. The Morphology and Histology of the Genital System of Theba Pisana (Müller) (Pulmonata: Helicidae). Universiteit van Stellenbosch, 1973.
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