Cita APA (7th ed.)

Callahan, J., & Grigsby, J. R. J. (1975). Federation. Visair Educational [production company] ; L&S Educational Equipment [distributor].

Cita Chicago (17th ed.)

Callahan, Joan, i J. R. J. Grigsby. Federation. Croydon : East Bentleigh, Vic.: Visair Educational [production company] ; L&S Educational Equipment [distributor], 1975.

Cita MLA (8th ed.)

Callahan, Joan, i J. R. J. Grigsby. Federation. Visair Educational [production company] ; L&S Educational Equipment [distributor], 1975.