Gaya APA
JOHNSON, ROBERT. (1984).
Elementary statistics (4e).
Boston:
PWS-KENT.
Gaya Chicago
JOHNSON, ROBERT.
Elementary statistics.
4e
Boston:
PWS-KENT,
1984.
Buku.
Gaya MLA
JOHNSON, ROBERT.
Elementary statistics.
4e
Boston:
PWS-KENT,
1984.
Buku.
Gaya Turabian
JOHNSON, ROBERT.
Elementary statistics.
4e
Boston:
PWS-KENT,
1984.
Buku.