Styl cytowania APA

Sahni, K. C. (1990). Gymnospherms of India and adjacent countries.

Styl cytowania Chicago

Sahni, K C. Gymnospherms of India and Adjacent Countries. Dehra Dun, Bishen Singh Mahendra Pal Singh, 1990.

Styl cytowania MLA

Sahni, K C. Gymnospherms of India and Adjacent Countries. 1990.