Cita APA (7a ed.)

McDonald, R., Jarolimek, J., & Davis, B. (1974). One plus one: Learning about communities. Macmillan [u.a.

Cita Chicago Style (17a ed.)

McDonald, Ruth, John Jarolimek, y Bertha Davis. One Plus One: Learning About Communities. New York: Macmillan [u.a, 1974.

Cita MLA (9a ed.)

McDonald, Ruth, et al. One Plus One: Learning About Communities. Macmillan [u.a, 1974.