Cite
Refinery Catalysts.
MLA
Coons, Rebecca, and Vincent Valk. “Refinery Catalysts. (Cover Story).” Chemical Week, vol. 173, no. 11, Apr. 2011, pp. 19–23. 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=asx&AN=60581726&authtype=sso&custid=ns315887.
APA
Coons, R., & Valk, V. (2011). Refinery Catalysts. (Cover story). Chemical Week, 173(11), 19–23.
Chicago
Coons, Rebecca, and Vincent Valk. 2011. “Refinery Catalysts. (Cover Story).” Chemical Week 173 (11): 19–23. 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=asx&AN=60581726&authtype=sso&custid=ns315887.