Cite
Two Theories of Design and Instructional Design.
MLA
Tripp, Steven D. Two Theories of Design and Instructional Design. Jan. 1991. 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=eric&AN=ED335019&authtype=sso&custid=ns315887.
APA
Tripp, S. D. (1991). Two Theories of Design and Instructional Design.
Chicago
Tripp, Steven D. 1991. “Two Theories of Design and Instructional Design,” January. 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=eric&AN=ED335019&authtype=sso&custid=ns315887.