APA aipamena

Govt. of India. (1989). Economic Survey 1989-90. Govt. of India.

Chicago Style aipamena

Govt. of India. Economic Survey 1989-90. Govt. of India, 1989.

MLA aipamena

Govt. of India. Economic Survey 1989-90. Govt. of India, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.