Gaya APA
Hulley, Stephen B.. (2013).
Designing clinical research, 4th ed. (4th ed.).
:
.
Gaya Chicago
Hulley, Stephen B..
Designing clinical research, 4th ed..
4th ed.
:
,
2013.
Text.
Gaya MLA
Hulley, Stephen B..
Designing clinical research, 4th ed..
4th ed.
:
,
2013.
Text.
Gaya Turabian
Hulley, Stephen B..
Designing clinical research, 4th ed..
4th ed.
:
,
2013.
Print.