TY  - BOOK
AU  - Chaffey, Dave  & Smith, P. R.
TI  - Emarketing excellence: planning and optimizing your digital marketing
SN  - 978-0-415-53337-9
U1  - 658.872 Cha/Smi 
PY  - 2013///
CY  - Routledge, London
ER  -