Παραπομπή APA

Birkhoff, G. D. (1968). Collected mathematical papers for scientists and engineers (2nd ed.). Dover.

Παραπομπή Chicago Style

Birkhoff, George David. Collected Mathematical Papers for Scientists and Engineers. 2nd ed. New York: Dover, 1968.

Παραπομπή MLA

Birkhoff, George David. Collected Mathematical Papers for Scientists and Engineers. 2nd ed. Dover, 1968.