APA Style

Ross, R, R. (1990). Combodia : a country study / Ryssell R. Ross (3rd. ed.). Washington D.C.: Federal Research Division, Library of Congress..

MLA Style

Ross, Ryssell, R.. "Combodia : a country study / Ryssell R. Ross". 3rd. ed. Washington D.C.: Federal Research Division, Library of Congress., 1990. หนังสือ (Book).