APA

Ghosh P. K. e. a., . (1989). Business studies: A textbook for class XI. : National Council for Asian Affairs, Philadelphia.

Chicago

Ghosh P K et al, . 1989. Business studies: A textbook for class XI. : National Council for Asian Affairs, Philadelphia.

Harvard

Ghosh P. K. e. a., . (1989). Business studies: A textbook for class XI. : National Council for Asian Affairs, Philadelphia.

MLA

Ghosh P K et al, . Business studies: A textbook for class XI. : National Council for Asian Affairs, Philadelphia. 1989.