Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.