TY  - GEN
AU  - Chaffey, Dave
AU  - Smith, PR
TI  - Digital marketing excellence: planning, optimizing and integrating online marketing 
SN  - 9781138191709 (pb)
U1  - 658.872 CHA-SMI 
PY  - 2017///
CY  - Oxon
PB  - Routledge
N1  - Includes glossary and index
ER  -