Παραπομπή APA

DN Tewari. (1994). A monograph on Chir pine (Pinus roxburghii Sarg.). International book distributors.

Παραπομπή Chicago Style

DN Tewari. A Monograph on Chir Pine (Pinus Roxburghii Sarg.). Dehra Dun: International book distributors, 1994.

Παραπομπή MLA

DN Tewari. A Monograph on Chir Pine (Pinus Roxburghii Sarg.). International book distributors, 1994.