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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSeminar on Travel and Tourism Stresa, Italy, और 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSeminar on Travel and Tourism Stresa, Italy, और 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.