Gaya APA
Gallo, J, J. et al
(1998).
Buku saku gerontologi = handbook of geriatric assessment
.
Jakartaa:
EGC.
Gaya MLA
Gallo, Joseph, J.. et al.
"Buku saku gerontologi = handbook of geriatric assessment".
Jakartaa:
EGC,
1998.
Text.