Beckman, T. N. (1962). Credits and collections: Management and theory (7th ed.). McGraw-Hill.
芝加哥风格引文Beckman, Theodore N. Credits and Collections: Management and Theory. 7th ed. N.Y.: McGraw-Hill, 1962.
MLA引文Beckman, Theodore N. Credits and Collections: Management and Theory. 7th ed. McGraw-Hill, 1962.
警告:这些引文格式不一定是100%准确.