Gaya APA
Questionaire design and attitude measurement. (1966).
London:
Heinemann Educational Books.
Gaya Chicago
Questionaire design and attitude measurement.
.
London:
Heinemann Educational Books,
1966.
Buku.
Gaya MLA
Questionaire design and attitude measurement.
.
London:
Heinemann Educational Books,
1966.
Buku.
Gaya Turabian
Questionaire design and attitude measurement.
London:
Heinemann Educational Books,
1966.
Buku.