Portus, L. M. (2015). Internet literacy: Levels of literacy among selected Filipinos across economic classes. Plaridel.
Čikaški stil citiranja (17. izdanje)Portus, Lourdes M. "Internet Literacy: Levels of Literacy Among Selected Filipinos Across Economic Classes." Plaridel 2015.
MLA način citiranja (9. izdanje)Portus, Lourdes M. "Internet Literacy: Levels of Literacy Among Selected Filipinos Across Economic Classes." Plaridel, 2015.
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