Fretter, V. [. (1968). Studies in the structure, physiology and ecology of molluscs. The Zoological Society of London.
Dyfyniad Arddull ChicagoFretter, Vera [ed.]. Studies in the Structure, Physiology and Ecology of Molluscs. London: The Zoological Society of London, 1968.
Dyfyniad MLAFretter, Vera [ed.]. Studies in the Structure, Physiology and Ecology of Molluscs. The Zoological Society of London, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.