APA Style

Susan$h5, N, ,., Derek$h5, N, ,. (2000). Delighting your customers: keep your customers coming back, time and time again . : HowTo Books.

MLA Style

Susan$h5, Nash, ,., Derek$h5, Nash, ,. "Delighting your customers: keep your customers coming back, time and time again". : HowTo Books, 2000. Text.