APA
Timm P. R., . (2004). 50 Powerful ideas to keep your customers. Jaico Publishing House, Mumbai: .
Chicago
Timm Paul R, . 2004. 50 Powerful ideas to keep your customers. Jaico Publishing House, Mumbai: .
Harvard
Timm P. R., . (2004). 50 Powerful ideas to keep your customers. Jaico Publishing House, Mumbai: .
MLA
Timm Paul R, . 50 Powerful ideas to keep your customers. Jaico Publishing House, Mumbai: . 2004.