Gaya APA
Lester, Richard K.. (1998).
The Productive Edge .
New York:
W.W. Norton.
Gaya Chicago
Lester, Richard K..
The Productive Edge.
New York:
W.W. Norton,
1998.
Buku.
Gaya MLA
Lester, Richard K..
The Productive Edge.
New York:
W.W. Norton,
1998.
Buku.
Gaya Turabian
Lester, Richard K..
The Productive Edge.
New York:
W.W. Norton,
1998.
Buku.