Castleman, Michael (17 de octubre de 2010). «Easier Orgasms for Women in the Missionary Position». Psychology Today. Consultado el 19 de febrero de 2021. «Enter the "coital alignment technique" (CAT). It was first introduced back in 1988 by sex researcher Edward Eichel, who claimed that it helped women have orgasms during missionary-position sex. The CAT is deceptively simple: Instead of the man lying on top of the woman chest-to-chest with his penis moving more or less horizontally, the man shifts himself forward so that his chest is closer to one of her shoulders. As a result, his penis moves more up and down. In other words, the man rides higher on the woman's pelvis, and the bony base of his penis makes more contact with the woman's clitoris.»
PICHARDO GALÁN, José Ignacio [Opciones sexuales y nuevos modelos de familia pag 40 en TELLES INFANTES, Anastasia y MARTINEZ GUIRAO, Javier Eloy (Coord) Sexualidad, Género, Cambio de Roles y Nuevos Modelos de Familia 2008 Edita: (S.I.E.G.) Seminario Interdisciplinar de Estudios de Género del Vicerrectorado de Estudiantes y Extensión Universitaria de la Universidad Miguel Hernández ISBN 978-84-96297-88-3
