Irrationalzahlen.

MLA

Hazlett, Olive C., et al. “Irrationalzahlen.” Bulletin of the American Mathematical Society, Jan. 1940, p. 15. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edb&AN=72332027&authtype=sso&custid=ns315887.

APA

Hazlett, O. C., Albert, A. A., Graves, L. M., Fort, T., & Smith, P. A. (1940). Irrationalzahlen. Bulletin of the American Mathematical Society, 15.

Chicago

Hazlett, Olive C., Abraham Adrian Albert, Lawrence Murray Graves, Tomlinson Fort, and Paul Althaus Smith. 1940. “Irrationalzahlen.” Bulletin of the American Mathematical Society, January, 15. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edb&AN=72332027&authtype=sso&custid=ns315887.