Q. How do I cite an electronic journal article that does not have page numbers?
All style guides have provisions to cite ejournals that do not have page numbers.
The following is from the Chicago Manual of Style, 18th ed.:
14.71: Journal page references
"Most journals published online provide page numbers. Where this is not the case, another type of locator such as a subheading may become appropriate in a note. None, however, is required."