Starch INRA Hooper (Firm) & United States Travel Service. Research and Analysis Division. Belgium: A study of the international travel market. The Division, c1978.
Citazione stile Chigago Style (17a edizione)Starch INRA Hooper (Firm) e United States Travel Service. Research and Analysis Division. Belgium: A Study of the International Travel Market. [Washington: The Division, c1978.
Citatione MLA (9a ed.)Starch INRA Hooper (Firm) e United States Travel Service. Research and Analysis Division. Belgium: A Study of the International Travel Market. The Division, c1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.