Gaya APA
Deeken, A.
(1986).
Usia lanjut. : Growing Old, and how to cope with it. 1972
.
Yogyakarta:
Kanisius.
Gaya MLA
Deeken, Alfons.
"Usia lanjut. : Growing Old, and how to cope with it. 1972 ".
Yogyakarta:
Kanisius,
1986.
Buku.