Gaya APA
Maurus, J., Hamsa, S.
(2018).
Grow Old Gracefully: Hidup Bahagia Sampai Tua
.
Yogyakarta:
Bright Publisher.
Gaya MLA
Maurus, J.., Hamsa, Susilawati.
"Grow Old Gracefully: Hidup Bahagia Sampai Tua".
Yogyakarta:
Bright Publisher,
2018.
Text.