APA ציטוט

Ratzel,, . F. (1989). History of mankind: Vol.2. Radha Publication.

Chicago Edition Citation

Ratzel,, Friedrich. History of Mankind: Vol.2. Delhi: Radha Publication, 1989.

ציטוט MLA

Ratzel,, Friedrich. History of Mankind: Vol.2. Radha Publication, 1989.