Manila and Quezon City, Luzon, Philippines. Board of Technical Surveys and Maps.
Chicago-viite (17. p.)Manila and Quezon City, Luzon, Philippines. Manila: Board of Technical Surveys and Maps.
MLA-viite (9. p.)Manila and Quezon City, Luzon, Philippines. Board of Technical Surveys and Maps.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.