Philippines (Republic). Bureau of Public Works & Highway Planning Survey. (1950). Philippine highways: A study of the highway transport system requirements and recommendations. s.n.].
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিPhilippines (Republic). Bureau of Public Works এবং Highway Planning Survey. Philippine Highways: A Study of the Highway Transport System Requirements and Recommendations. [Manila: s.n.], 1950.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিPhilippines (Republic). Bureau of Public Works এবং Highway Planning Survey. Philippine Highways: A Study of the Highway Transport System Requirements and Recommendations. s.n.], 1950.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.