Gaya APA
Walsh, D, |.
(2015).
Dental Hygiene Theory and Practice
(
Four Edition)
.
St. Louis Misouri:
Elsevier.
Gaya MLA
Walsh, Darby, |.
"Dental Hygiene Theory and Practice".
Four Edition
St. Louis Misouri:
Elsevier,
2015.
Computer Software.