Whipple, B. (1989). Safe encounters: How women can say yes to pleasure and no to unsafe sex. McGraw-Hill Book Co.
Citace podle Chicago (17th ed.)Whipple, Beverly. Safe Encounters: How Women Can Say Yes to Pleasure and No to Unsafe Sex. New York: McGraw-Hill Book Co, 1989.
Citace podle MLA (9th ed.)Whipple, Beverly. Safe Encounters: How Women Can Say Yes to Pleasure and No to Unsafe Sex. McGraw-Hill Book Co, 1989.
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