Robert L. Crooks, Karla Baur (2016). Our Sexuality. Cengage Learning. p. 300. ISBN 1305887425. Retrieved January 4, 2017.
doi.org
Bogaert, Anthony F. (2004). "Asexuality: prevalence and associated factors in a national probability sample". Journal of Sex Research. 41 (3): 279–87. PMID 15497056. doi:10.1080/00224490409552235.
Bogaert, Anthony F. (2004). "Asexuality: prevalence and associated factors in a national probability sample". Journal of Sex Research. 41 (3): 279–87. PMID 15497056. doi:10.1080/00224490409552235.