APA-viite (7. p.)

(1980). Manila North Road improvement project (Rosario-Laoag Section): Package I & II ; monthly report, August 1980. Ministry of Public Highways.

Chicago-viite (17. p.)

Manila North Road Improvement Project (Rosario-Laoag Section): Package I & II ; Monthly Report, August 1980. Manila: Ministry of Public Highways, 1980.

MLA-viite (9. p.)

Manila North Road Improvement Project (Rosario-Laoag Section): Package I & II ; Monthly Report, August 1980. Ministry of Public Highways, 1980.