Gaya APA
National Telephone Networks for the Automatic Service. (1977).
:
Consultative Committe.
Gaya Chicago
National Telephone Networks for the Automatic Service.
.
:
Consultative Committe,
1977.
.
Gaya MLA
National Telephone Networks for the Automatic Service.
.
:
Consultative Committe,
1977.
.
Gaya Turabian
National Telephone Networks for the Automatic Service.
:
Consultative Committe,
1977.
.