APA (7. basım) Alıntı

Spencer, M. (1986). Contemporary economics (6th. ed.). Worth.

Chicago Style (17. basım) Atıf

Spencer, Milton. Contemporary Economics. 6th. ed. New York: Worth, 1986.

MLA (9th ed.) Atıf

Spencer, Milton. Contemporary Economics. 6th. ed. Worth, 1986.