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1Được phát hành 2015Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access
Electronic Resource -
2Được phát hành 2015Available for University of the Philippines Baguio via Gale Virtual Reference Library. Click here to access
Electronic Resource -
3Bằng Hughes, Geoffrey 1939-Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access
Được phát hành 2006
Electronic Resource -
4Bằng Hughes, Geoffrey 1939-Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access
Được phát hành 2006
Electronic Resource -
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