Philippine Islands. Bureau of Coast and Geodetic Survey. (1924). Relief model of the Philippine Islands: Notes on the construction and some of its salient features. Bureau of Printing.
Chicago-referens (17:e uppl.)Philippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Manila: Bureau of Printing, 1924.
MLA-referens (9:e uppl.)Philippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Bureau of Printing, 1924.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.