Masters, E. L. (1977). Gettysburg, Manila, Acoma [microform]. Photoduplication Service. University of the Philippines Library.
Dyfyniad Arddull ChicagoMasters, Edgar Lee. Gettysburg, Manila, Acoma [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Dyfyniad MLAMasters, Edgar Lee. Gettysburg, Manila, Acoma [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.