Montallana, Z. M. (1988). The profile, status, and prospects of public elementary schools in the depressed areas of Oras West District, Division of Eastern Samar, as basis of formulating a development plan to upgrade existing DDU schools.
Lua i Stíl Chicago (17ú heag.)Montallana, Zanaida Montaces. The Profile, Status, and Prospects of Public Elementary Schools in the Depressed Areas of Oras West District, Division of Eastern Samar, as Basis of Formulating a Development Plan to Upgrade Existing DDU Schools. 1988.
Lua MLA (9ú heag.)Montallana, Zanaida Montaces. The Profile, Status, and Prospects of Public Elementary Schools in the Depressed Areas of Oras West District, Division of Eastern Samar, as Basis of Formulating a Development Plan to Upgrade Existing DDU Schools. 1988.