Comyn, T. d., & Walton, W. (1976). State of the Philippine islands: Being an historical statistical and descriptive account of that interesting portion of the Indian Archipelago [microform]. Photoduplication Service, University of the Philippines Library.
Čikaški stil citiranja (17. izdanje)Comyn, Tomas de, i William Walton. State of the Philippine Islands: Being an Historical Statistical and Descriptive Account of That Interesting Portion of the Indian Archipelago [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA način citiranja (9. izdanje)Comyn, Tomas de, i William Walton. State of the Philippine Islands: Being an Historical Statistical and Descriptive Account of That Interesting Portion of the Indian Archipelago [microform]. Photoduplication Service, University of the Philippines Library, 1976.