Gaya APA
, ., Summers, G, F.
(1970).
Attitude Measurement
.
Rand Mc Nally, 1970:
Rand Mc Nally, 1970.
Gaya MLA
, ., Summers, Gene, F.
"Attitude Measurement".
Rand Mc Nally, 1970:
Rand Mc Nally, 1970,
1970.
.