Citazione Stile APA (7a Edizione)

Hdrlicka, A. (1918). Recent discoveries attributed to early man in America (1a. ed.). Government Printing Office.

Citazione stile Chigago Style (17a edizione)

Hdrlicka, Ales. Recent Discoveries Attributed to Early Man in America. 1a. ed. Washington, D.C: Government Printing Office, 1918.

Citatione MLA (9a ed.)

Hdrlicka, Ales. Recent Discoveries Attributed to Early Man in America. 1a. ed. Government Printing Office, 1918.