Co. Swift et Bj. Coe, SOURCING PREFERENCE SCALE - MEASURING PREFERENCES OF PURCHASING MANAGERS FOR SINGLE SOURCING OR MULTIPLE SOURCING OF PRODUCTS, Industrial marketing management, 23(2), 1994, pp. 171-180
This study examines single and multiple sourcing of products. A scale,
the sourcing preference (SP) scale, is developed to measure purchasin
g manager attitudes towards either single or multiple sourcing. The sc
ale is then used to determine differences in selected demographic and
organizational characteristics between purchasing managers who have a
preference for single sourcing and those who have a preference for mul
tiple sourcing.