Gaya APA

Timpe, A, D. (1991). Mengelola Waktu (The Management of Time) (1). Jakarta: PT ELEX MEDIA KOMPUTINDO.

Gaya MLA

Timpe, A., Dale. "Mengelola Waktu (The Management of Time)". 1 Jakarta: PT ELEX MEDIA KOMPUTINDO, 1991. Text.