APA (7 ম সংস্করণ) উদ্ধৃতি

Organisation for Economic Co-operation and Development. (1978). Oecd economic surveys: Portugal 1977. OECD Publishing.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Organisation for Economic Co-operation and Development. Oecd Economic Surveys: Portugal 1977. Paris, France: OECD Publishing, 1978.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Organisation for Economic Co-operation and Development. Oecd Economic Surveys: Portugal 1977. OECD Publishing, 1978.