Gaya APA
Higgens, Gavin. (1980).
Printed reference material .
London:
The Library Association.
Gaya Chicago
Higgens, Gavin.
Printed reference material.
London:
The Library Association,
1980.
Text.
Gaya MLA
Higgens, Gavin.
Printed reference material.
London:
The Library Association,
1980.
Text.
Gaya Turabian
Higgens, Gavin.
Printed reference material.
London:
The Library Association,
1980.
Print.