Japan International Cooperation Agency. (1987). Feasibility study of the road improvement project on the Pan-Philippine Highway (Philippines-Japan Friendship Highway). Japan International Cooperation Agency ; Department of Public Works and Highways.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিJapan International Cooperation Agency. Feasibility Study of the Road Improvement Project on the Pan-Philippine Highway (Philippines-Japan Friendship Highway). Manila: Japan International Cooperation Agency ; Department of Public Works and Highways, 1987.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিJapan International Cooperation Agency. Feasibility Study of the Road Improvement Project on the Pan-Philippine Highway (Philippines-Japan Friendship Highway). Japan International Cooperation Agency ; Department of Public Works and Highways, 1987.