Marcus, E. (2005). Is it a choice?: Answers to the most frequently asked questions about gay and lesbian people (Revised ed.). HarperSanFrancisco.
Citace podle Chicago (17th ed.)Marcus, Eric. Is It a Choice?: Answers to the Most Frequently Asked Questions About Gay and Lesbian People. Revised ed. San Francisco: HarperSanFrancisco, 2005.
Citace podle MLA (9th ed.)Marcus, Eric. Is It a Choice?: Answers to the Most Frequently Asked Questions About Gay and Lesbian People. Revised ed. HarperSanFrancisco, 2005.
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