Cita APA (7th ed.)

Cook, L. A., & Cook, E. F. (1954). Intergroup education: (by) L. and E.Cook. McGraw-Hill.

Cita Chicago (17th ed.)

Cook, Lloyd Allen, i Elaine Forsyth Cook. Intergroup Education: (by) L. and E.Cook. N.Y.: McGraw-Hill, 1954.

Cita MLA (8th ed.)

Cook, Lloyd Allen, i Elaine Forsyth Cook. Intergroup Education: (by) L. and E.Cook. McGraw-Hill, 1954.