Gaya APA
Carret, Philip L. (1997).
The Art of speculation .
New York:
John Wiley.
Gaya Chicago
Carret, Philip L.
The Art of speculation.
New York:
John Wiley,
1997.
Buku.
Gaya MLA
Carret, Philip L.
The Art of speculation.
New York:
John Wiley,
1997.
Buku.
Gaya Turabian
Carret, Philip L.
The Art of speculation.
New York:
John Wiley,
1997.
Buku.