Cita APA (7th ed.)
(1977). Illustrated world encyclopedia: One volume edition (ed.). Bobley publishing corp..
Cita Chicago (17th ed.)
Illustrated World Encyclopedia: One Volume Edition. ed. New York: Bobley publishing corp., 1977.
Cita MLA (9th ed.)
Illustrated World Encyclopedia: One Volume Edition. ed. Bobley publishing corp., 1977.
Atenció: Aquestes cites poden no estar 100% correctes.