Lua APA (7ú heag.)
Sandfort, T. (1998). Sexual preference and work: A comparison between homosexual and heterosexual persons. RS-Drukkerij, Rijswijk.
Lua i Stíl Chicago (17ú heag.)
Sandfort, Theo. Sexual Preference and Work: A Comparison Between Homosexual and Heterosexual Persons. Urtecht: RS-Drukkerij, Rijswijk, 1998.
Lua MLA (9ú heag.)
Sandfort, Theo. Sexual Preference and Work: A Comparison Between Homosexual and Heterosexual Persons. RS-Drukkerij, Rijswijk, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.