Gaya APA
Levin, Richard I. (1987).
Statistics for management (4e).
New Jersey:
Prentice Hall.
Gaya Chicago
Levin, Richard I.
Statistics for management.
4e
New Jersey:
Prentice Hall,
1987.
Buku.
Gaya MLA
Levin, Richard I.
Statistics for management.
4e
New Jersey:
Prentice Hall,
1987.
Buku.
Gaya Turabian
Levin, Richard I.
Statistics for management.
4e
New Jersey:
Prentice Hall,
1987.
Buku.