Cita APA (7a ed.)

Gray, C. A., Koopman, E., & Hunt, J. (1991). The emotional phases of marital separation: An empirical investigation. [s.n.].

Cita Chicago Style (17a ed.)

Gray, Cathleen A., Elizabeth Koopman, y Joan Hunt. The Emotional Phases of Marital Separation: An Empirical Investigation. [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Gray, Cathleen A., et al. The Emotional Phases of Marital Separation: An Empirical Investigation. [s.n.], 1991.