-
1द्वारा Kelly, Regina AnneAvailable for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access
प्रकाशित 2007
Electronic Resource -
2प्रकाशित 2005Available for University of the Philippines Baguio via Cambridge Book Online. Click here to access
Electronic Resource -
3द्वारा Cruden, GabrielAvailable for University of the Philippines System via Gale Virtual Reference Library. Click here to access
प्रकाशित 2005
Electronic Resource