APA

Porwal L. S. e. a., . (1989). Accounting, Part1: A textbook for class XI. : National Council of Educational Research & Training.

Chicago

Porwal L S et al, . 1989. Accounting, Part1: A textbook for class XI. : National Council of Educational Research & Training.

Harvard

Porwal L. S. e. a., . (1989). Accounting, Part1: A textbook for class XI. : National Council of Educational Research & Training.

MLA

Porwal L S et al, . Accounting, Part1: A textbook for class XI. : National Council of Educational Research & Training. 1989.