Gaya APA
Hoffman, Mark s. (1868).
The world Almanac and book of facts 1988 .
New York:
World Almanac.
Gaya Chicago
Hoffman, Mark s.
The world Almanac and book of facts 1988.
New York:
World Almanac,
1868.
Text.
Gaya MLA
Hoffman, Mark s.
The world Almanac and book of facts 1988.
New York:
World Almanac,
1868.
Text.
Gaya Turabian
Hoffman, Mark s.
The world Almanac and book of facts 1988.
New York:
World Almanac,
1868.
Print.