Gaya APA
Mengelola waktu=the management of time. (1991).
Jakarta:
Gramedia.
Gaya Chicago
Mengelola waktu=the management of time.
.
Jakarta:
Gramedia,
1991.
Buku.
Gaya MLA
Mengelola waktu=the management of time.
.
Jakarta:
Gramedia,
1991.
Buku.
Gaya Turabian
Mengelola waktu=the management of time.
Jakarta:
Gramedia,
1991.
Buku.