Gaya APA

(E) retire young. (2001). : PT SUN, Jakarta.

Gaya Chicago

(E) retire young. . : PT SUN, Jakarta, 2001. EBOOK.

Gaya MLA

(E) retire young. . : PT SUN, Jakarta, 2001. EBOOK.

Gaya Turabian

(E) retire young. : PT SUN, Jakarta, 2001. EBOOK.