Gaya APA
Bung, K. (1967-68 [v. 1, 1968]).
Programmed learning and the language laboratory: collected papers .
enk:
Longmac.
Gaya MLA
Bung, Klaus..
"Programmed learning and the language laboratory: collected papers".
enk:
Longmac,
1967-68 [v. 1, 1968].
print.