Olonan, Z. A. (1969). A follow-up of the University of the Philippines External Studies Graduate Education Students, Paniqui Center, Tarlac. s.n.].
Chicago-referens (17:e uppl.)Olonan, Zenaida Aganan. A Follow-up of the University of the Philippines External Studies Graduate Education Students, Paniqui Center, Tarlac. [Quezon City: s.n.], 1969.
MLA-referens (9:e uppl.)Olonan, Zenaida Aganan. A Follow-up of the University of the Philippines External Studies Graduate Education Students, Paniqui Center, Tarlac. s.n.], 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.