APA (7th ed.) Citation

Grégory, C. (1978). Enciclopaedia universalis: 13, Physique-régionalisme (12e publ.). Encyclopaedia Universalis France.

Chicago Style (17th ed.) Citation

Grégory, Claude. Enciclopaedia Universalis: 13, Physique-régionalisme. 12e publ. Paris: Encyclopaedia Universalis France, 1978.

MLA (9th ed.) Citation

Grégory, Claude. Enciclopaedia Universalis: 13, Physique-régionalisme. 12e publ. Encyclopaedia Universalis France, 1978.

Warning: These citations may not always be 100% accurate.