Argonza, E. F. D. (2000). 13th gate unveiled: The glorious destiny of the Philippines & Southeast Asia. Collegium Liberum Publications.
Chicago-viite (17. p.)Argonza, Erle Frayne D. 13th Gate Unveiled: The Glorious Destiny of the Philippines & Southeast Asia. Quezon City: Collegium Liberum Publications, 2000.
MLA-viite (9. p.)Argonza, Erle Frayne D. 13th Gate Unveiled: The Glorious Destiny of the Philippines & Southeast Asia. Collegium Liberum Publications, 2000.
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