Seminar on Travel and Tourism Stresa, Italy, & European Society for Opinion and Marketing Research. (1977). Seminar on "Travel and Tourism", Stresa, 19th-22nd October, 1977. European Society for Opinion and Marketing Research Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSeminar on Travel and Tourism Stresa, Italy, এবং European Society for Opinion and Marketing Research. Seminar on "Travel and Tourism", Stresa, 19th-22nd October, 1977. Amsterdam: European Society for Opinion and Marketing Research Association, 1977.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিSeminar on Travel and Tourism Stresa, Italy, এবং European Society for Opinion and Marketing Research. Seminar on "Travel and Tourism", Stresa, 19th-22nd October, 1977. European Society for Opinion and Marketing Research Association, 1977.