Cita APA (7a ed.)

Langer, W. L., Boak, A. E. R., Slosson, P. W., & Anderson, H. R. (1945). World history. Houghton Mifflin.

Cita Chicago Style (17a ed.)

Langer, William L., Arthur Edward Romilly Boak, Preston W. Slosson, y Howard R. Anderson. World History. Boston [u.a.]: Houghton Mifflin, 1945.

Cita MLA (9a ed.)

Langer, William L., et al. World History. Houghton Mifflin, 1945.