APA Style
Hearn, Donald D.. ().
Encyclopedia of Public Health. .
:
.
Chicago Style
Hearn, Donald D..
Encyclopedia of Public Health..
:
,
.
.
MLA Style
Hearn, Donald D..
Encyclopedia of Public Health..
:
,
.
.
Turabian Style
Hearn, Donald D..
Encyclopedia of Public Health..
:
,
.
.