Gaya APA
Lipski, P, C, , E.
(2005).
Digestive Wellness 3 rd Ed.
.
United States of America:
McGraw-Hill.
Gaya MLA
Lipski, Ph.D.,, CCN,, , Elizabeth.
"Digestive Wellness 3 rd Ed.".
United States of America:
McGraw-Hill,
2005.
eBooks.