APA-referens (7:e uppl.)

S, B. B. (1990). Recent on the national income (1st edition.). B B S.

Chicago-referens (17:e uppl.)

S, B B. Recent on the National Income. 1st edition. Dhaka: B B S, 1990.

MLA-referens (9:e uppl.)

S, B B. Recent on the National Income. 1st edition. B B S, 1990.