Cite
An open mapping theorem
MLA
Kung Fu Ng. “An Open Mapping Theorem.” Mathematical Proceedings of the Cambridge Philosophical Society, vol. 74, July 1973, pp. 61–66. 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=edsair&AN=edsair.doi...........81b42f26f685c9685daa19aa42c99d83&authtype=sso&custid=ns315887.
APA
Kung Fu Ng. (1973). An open mapping theorem. Mathematical Proceedings of the Cambridge Philosophical Society, 74, 61–66.
Chicago
Kung Fu Ng. 1973. “An Open Mapping Theorem.” Mathematical Proceedings of the Cambridge Philosophical Society 74 (July): 61–66. 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=edsair&AN=edsair.doi...........81b42f26f685c9685daa19aa42c99d83&authtype=sso&custid=ns315887.