Gaya APA
Ferber, Robert. (19).
Apa itu survai ? / Robert Ferber .
Washington:
American Statistical AS.
Gaya Chicago
Ferber, Robert.
Apa itu survai ? / Robert Ferber.
Washington:
American Statistical AS,
19.
.
Gaya MLA
Ferber, Robert.
Apa itu survai ? / Robert Ferber.
Washington:
American Statistical AS,
19.
.
Gaya Turabian
Ferber, Robert.
Apa itu survai ? / Robert Ferber.
Washington:
American Statistical AS,
19.
.