A bridge that is a manpower and technological wonder. Manila Bulletin.
Chicago-viite (17. p.)"A Bridge That Is a Manpower and Technological Wonder." Manila Bulletin .
MLA-viite (9. p.)"A Bridge That Is a Manpower and Technological Wonder." Manila Bulletin, .
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.