Gaya APA
Humphrey, Edward. (1977).
The Americana Annual 1977 .
Canada:
Grolier Incorporated.
Gaya Chicago
Humphrey, Edward.
The Americana Annual 1977.
Canada:
Grolier Incorporated,
1977.
Text.
Gaya MLA
Humphrey, Edward.
The Americana Annual 1977.
Canada:
Grolier Incorporated,
1977.
Text.
Gaya Turabian
Humphrey, Edward.
The Americana Annual 1977.
Canada:
Grolier Incorporated,
1977.
Print.