Cita APA (7th ed.)

Chopra, B. (1989). Business environment: 1989-90 an outline (3rd.). T.R.F.

Cita Chicago (17th ed.)

Chopra, B. Business Environment: 1989-90 an Outline. 3rd. Pune: T.R.F, 1989.

Cita MLA (9th ed.)

Chopra, B. Business Environment: 1989-90 an Outline. 3rd. T.R.F, 1989.