• https://repository.wvsu.edu.ph/handle/20.500.14353/424
• https://repository.wvsu.edu.ph/handle/20.500.14353/812
• https://repository.wvsu.edu.ph/handle/20.500.14353/526
• https://repository.wvsu.edu.ph/handle/20.500.14353/155
• https://repository.wvsu.edu.ph/handle/20.500.14353/289
• https://repository.wvsu.edu.ph/handle/20.500.14353/81
• https://repository.wvsu.edu.ph/handle/20.500.14353/175
• https://repository.wvsu.edu.ph/handle/20.500.14353/837
• https://repository.wvsu.edu.ph/handle/20.500.14353/387
• https://repository.wvsu.edu.ph/handle/20.500.14353/681
• https://repository.wvsu.edu.ph/handle/20.500.14353/810