Hekma, G. Homosexuality and the left in the Netherlands: 1890-1911. Journal of homosexuality, 2-3, vol. 29, 97-115.
Lua i Stíl Chicago (17ú heag.)Hekma, Gert. "Homosexuality and the Left in the Netherlands: 1890-1911." Journal of Homosexuality 2-3, vol. 29 (): 97-115.
Lua MLA (8ú heag.)Hekma, Gert. "Homosexuality and the Left in the Netherlands: 1890-1911." Journal of Homosexuality, 2-3, vol. 29, , pp. 97-115.
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