Gaya APA
Abrams, W, B. et al
(1997).
The Merck manual of geriatrics jilid 1
.
Jakarta:
Binarupa Aksara.
Gaya MLA
Abrams, William, B.. et al.
"The Merck manual of geriatrics jilid 1".
Jakarta:
Binarupa Aksara,
1997.
Text.