APA Style
Janssen, Sarah, Spadafora, Vincent G. ().
The world almanac : and book of facts 2007 .
Amerika:
Word Almanac Education Group.
Chicago Style
Janssen, Sarah, Spadafora, Vincent G.
The world almanac : and book of facts 2007.
Amerika:
Word Almanac Education Group,
.
Text.
MLA Style
Janssen, Sarah, Spadafora, Vincent G.
The world almanac : and book of facts 2007.
Amerika:
Word Almanac Education Group,
.
Text.
Turabian Style
Janssen, Sarah, Spadafora, Vincent G.
The world almanac : and book of facts 2007.
Amerika:
Word Almanac Education Group,
.
Print.