APA (7th ed.) Zitazioa

FREEMAN, H. (1960). Finite differences for actuarial students. University Press.

Chicago Style (17th ed.) Zitazioa

FREEMAN, Harry. Finite Differences for Actuarial Students. Cambridge: University Press, 1960.

MLA (9th ed.) Zitazioa

FREEMAN, Harry. Finite Differences for Actuarial Students. University Press, 1960.