Lumsden, R. (1993). Twenty-three steps to success and achievement. Indus.
Chicagoスタイル(17版)引用形式Lumsden, Robert. Twenty-three Steps to Success and Achievement. New delhi: Indus, 1993.
MLA(9版)引用形式Lumsden, Robert. Twenty-three Steps to Success and Achievement. Indus, 1993.
警告: この引用は必ずしも正確ではありません.