Ball, D., & Hoefer, H. (1991). Argentina (2nd ed.). APA Publications.
Cita Chicago (17th ed.)Ball, Deirdre, i Hans Hoefer. Argentina. 2nd ed. Hong Kong: APA Publications, 1991.
Cita MLA (9th ed.)Ball, Deirdre, i Hans Hoefer. Argentina. 2nd ed. APA Publications, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.