Gaya APA
Harrison's principles of internal medicine. (1980).
:
.
Gaya Chicago
Harrison's principles of internal medicine.
Ninth Edition.
:
,
1980.
Text.
Gaya MLA
Harrison's principles of internal medicine.
Ninth Edition.
:
,
1980.
Text.
Gaya Turabian
Harrison's principles of internal medicine.
:
,
1980.
Print.