Gaya APA
Distance teaching for higher and adult education. (1981).
London:
Croow Helm London.
Gaya Chicago
Distance teaching for higher and adult education.
text.
London:
Croow Helm London,
1981.
Tesis.
Gaya MLA
Distance teaching for higher and adult education.
text.
London:
Croow Helm London,
1981.
Tesis.
Gaya Turabian
Distance teaching for higher and adult education.
London:
Croow Helm London,
1981.
Tesis.