1. The Appropriateness of Facsimile as a Survey Medium;Au;Journal of International Marketing & Marketing Research,1994
2. Marketing Research;Churchill,1987
3. Conducting International Mail Surveys;Dawson;Journal of International Business Studies,1988
4. Factors Affecting Industrial Mail Response Rates;Diamantopoulos;Industrial Marketing Management,1991
5. Mail and Telephone Surveys;Dillman,1978