du Toit, C. M. (1990). Fundamental Business Economics (Second Edition). ELSEVIER.
Chicago Style (17th ed.) Citationdu Toit, C M. Fundamental Business Economics (Second Edition). ELSEVIER, 1990.
MLA引文du Toit, C M. Fundamental Business Economics (Second Edition). ELSEVIER, 1990.
警告:這些引文格式不一定是100%准確.