Halberstam, Judith (2004). "'Female masculinity'". ใน Kimmel, Michael S.; Aronson, Amy (บ.ก.). Men and Masculinities: A Social, Cultural, and Historical Encyclopedia, Volume 1. Santa Barbara, Calif.: ABC-CLIO. pp.294–5. ISBN978-1-57-607774-0.
Vetterling-Braggin, Mary (1982). "Introduction". "Femininity", "masculinity", and "androgyny": a modern philosophical discussion. Totowa, N.J: Littlefield, Adams. p.6. ISBN9780822603993. the [personality] theorist might classify a person as "masculine" if the person thought that person to have any or all of the following P-traits [personality traits] - GROUP Y TRAITS: strength of will, ambition, courage, independence, assertiveness, aggressiveness, ...
Carli, Linda L. (2001). "Assertiveness". ใน Worell, Judith (บ.ก.). Encyclopedia of women and gender: sex similarities and differences and the impact of society on gender, Volume 1. San Diego, California: Academic Press. pp.157–168. ISBN9780122272462.
Thomas, R. Murray (2001), "Feminist perspectives", in Thomas, R. Murray (บ.ก.). Recent theories of human development. Thousand Oaks, California: Sage. p.248. ISBN9780761922476. Gender feminists also consider traditional feminine traits (gentleness, modesty, humility, sacrifice, supportiveness, empathy, compassion, tenderness, nurturance, intuitiveness, sensitivity, unselfishness) morally superior to the traditional masculine traits (courage, strong will, ambition, independence, assertiveness, initiative, rationality and emotional control).