what does pp mean in referencing

This page reflects guidance from the sixth edition of the Publication Manual.
If a periodical includes a volume number, italicize it and then change to regular type and give the page range without pp.

If the periodical does not use volume numbers, include “pp.” before the page numbers, so the reader will understand that the numbers refer to pagination.
MLA

• Some of the more often used examples are listed here:
• Standard abbreviations may be used in your citations.

References:

http://libanswers.walsh.edu/faq/147464
http://libguides.murdoch.edu.au/mla/abbreviation
http://help.stilt.com/hc/en-us/articles/360003061194-Who-can-I-put-down-for-a-reference-