Gaya APA
Covey, Stephen R.. (2013).
7 Habits of Highly Effective People ; Powerful Lessons in Personal Change (25th anniversary edition.).
New York:
Simon & Schuster.
Gaya Chicago
Covey, Stephen R..
7 Habits of Highly Effective People ; Powerful Lessons in Personal Change.
25th anniversary edition.
New York:
Simon & Schuster,
2013.
Buku.
Gaya MLA
Covey, Stephen R..
7 Habits of Highly Effective People ; Powerful Lessons in Personal Change.
25th anniversary edition.
New York:
Simon & Schuster,
2013.
Buku.
Gaya Turabian
Covey, Stephen R..
7 Habits of Highly Effective People ; Powerful Lessons in Personal Change.
25th anniversary edition.
New York:
Simon & Schuster,
2013.
Buku.