APA (7th ed.) Citation

Friedrich, P. (1970). Proto-Indo-European trees: The arboreal system of a prehistoric people. University of Chicago Press.

Chicago Style (17th ed.) Citation

Friedrich, Paul. Proto-Indo-European Trees: The Arboreal System of a Prehistoric People. Chicago: University of Chicago Press, 1970.

MLA (8th ed.) Citation

Friedrich, Paul. Proto-Indo-European Trees: The Arboreal System of a Prehistoric People. University of Chicago Press, 1970.

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