APA

Gray J., . (1992). Men are from Mars, women are from Venus: a practical guide for improving communication and getting what you want in your relationships. New York, NY: HarperCollins.

Chicago

Gray John, . 1992. Men are from Mars, women are from Venus: a practical guide for improving communication and getting what you want in your relationships. New York, NY: HarperCollins.

Harvard

Gray J., . (1992). Men are from Mars, women are from Venus: a practical guide for improving communication and getting what you want in your relationships. New York, NY: HarperCollins.

MLA

Gray John, . Men are from Mars, women are from Venus: a practical guide for improving communication and getting what you want in your relationships. New York, NY: HarperCollins. 1992.