APA Style
Hulley, S, B., et.al., .
(2013).
Designing clinical research
(
4th ed.)
.
Philadelpia:
Wolter Kluwer.
MLA Style
Hulley, Stephen, B.., et.al., .
"Designing clinical research".
4th ed.
Philadelpia:
Wolter Kluwer,
2013.
Proceedings.