In APA Style, to credit direct quotations from online material that does not have page numbers, use paragraph numbers (where visible) with the abbreviation para. or use the heading plus the number of the paragraph following the heading (See the APA Referencing Guide for examples of how to cite material without page numbers).
In Chicago Footnotes Style, page numbers (if available) are required for all footnotes. In the absence of page numbers (eg. as in the case of some electronic documents), give the paragraph number or section heading.
Pinpoint referencing in-text for AGLC Style (Rules 1.1.5-1.1.6, 4.9, 5.4.1). Page numbers are required for secondary sources (books, articles etc) where they are not provided refer to the paragraph number or other numbered parts of the article. For cases use the paragraph number and section numbers etc for legislative materials.
