Padilla, R. A. (2008). Philosophy made simple: A textbook on introduction to philosophy. Books Atbp. Publishing Corporations.
Citazione stile Chigago Style (17a edizione)Padilla, Reynaldo A. Philosophy Made Simple: A Textbook on Introduction to Philosophy. Mandaluyong City: Books Atbp. Publishing Corporations, 2008.
Citatione MLA (9a ed.)Padilla, Reynaldo A. Philosophy Made Simple: A Textbook on Introduction to Philosophy. Books Atbp. Publishing Corporations, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.