Lal, B. (1965). Industrial productivity & eco. growth. Chaitanya Pub. House.
Cita Chicago (17th ed.)Lal, B. Industrial Productivity & Eco. Growth. Allahabad: Chaitanya Pub. House, 1965.
Cita MLA (9th ed.)Lal, B. Industrial Productivity & Eco. Growth. Chaitanya Pub. House, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.