Marcus, E. (1993). Is it a choice?: Answers to 300 of the most frequently asked questions about gays and lesbians. HarperSanFrancisco.
Citação do estilo Chicago (17ª ed.)Marcus, Eric. Is It a Choice?: Answers to 300 of the Most Frequently Asked Questions About Gays and Lesbians. San Francisco: HarperSanFrancisco, 1993.
Citação MLA (8ª ed.)Marcus, Eric. Is It a Choice?: Answers to 300 of the Most Frequently Asked Questions About Gays and Lesbians. HarperSanFrancisco, 1993.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.