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worldcat.org
AineA.CollierAineA., The Humble Little Condom: A History, wyd. 1st American paperback ed, Amherst, NY: Prometheus Books, 2007, ISBN 978-1-59102-556-6, OCLC153300137. Brak numerów stron w książce
Encyclopedia of Birth Control, Vern LV.L.Bullough, Santa Barbara, Calif.: ABC-CLIO, 2001, s. 75, ISBN 978-1576071816, OCLC50174689.