Gaya APA
Hoffman, August Jhon. (2008).
What Every Student Should Knoe about Procrastination .
America:
Pearson Longman.
Gaya Chicago
Hoffman, August Jhon.
What Every Student Should Knoe about Procrastination.
America:
Pearson Longman,
2008.
Buku.
Gaya MLA
Hoffman, August Jhon.
What Every Student Should Knoe about Procrastination.
America:
Pearson Longman,
2008.
Buku.
Gaya Turabian
Hoffman, August Jhon.
What Every Student Should Knoe about Procrastination.
America:
Pearson Longman,
2008.
Buku.