Berger, R. M. Gay & gray: The older homosexual man. Alyson.
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芝加哥风格引文
Berger, Raymond M. Gay & Gray: The Older Homosexual Man. Boston: Alyson.
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MLA引文
Berger, Raymond M. Gay & Gray: The Older Homosexual Man. Alyson.
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警告：这些引文格式不一定是100％准确.