Gaya APA

Kroll, W., Hawkins, D. (2001). Hidup Prima di Usia Senja (First Edition). Yogyakarta, Indonesia: Yayasan Andi.

Gaya MLA

Kroll, Woodrow., Hawkins, Don. "Hidup Prima di Usia Senja". First Edition Yogyakarta, Indonesia: Yayasan Andi, 2001. Academic.