Gaya APA
O\'Connor, J. (1980).
Better English pronunciation 1 [sound recording] (2nd ed.).
Cambrigde (England):
Cambrigde University Press.
Gaya MLA
O\'Connor, J.D..
"Better English pronunciation 1 [sound recording]".
2nd ed.
Cambrigde (England):
Cambrigde University Press,
1980.
Text.