APA
Len D'Innocenzo & Jack Cullen, . (2000). Customer focused selling. Velocity Business Publ, Bristol: .
Chicago
Len D'Innocenzo & Jack Cullen, . 2000. Customer focused selling. Velocity Business Publ, Bristol: .
Harvard
Len D'Innocenzo & Jack Cullen, . (2000). Customer focused selling. Velocity Business Publ, Bristol: .
MLA
Len D'Innocenzo & Jack Cullen, . Customer focused selling. Velocity Business Publ, Bristol: . 2000.