APA (7th ed.) Zitazioa

Lumsden, k. (1970). Microeconomics: A programmed book (2nd ed.). Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Lumsden, keith. Microeconomics: A Programmed Book. 2nd ed. Englewood Cliffs: Prentice-Hall, 1970.

MLA (9th ed.) Zitazioa

Lumsden, keith. Microeconomics: A Programmed Book. 2nd ed. Prentice-Hall, 1970.