Gaya APA
Janda, K. et al (2000).
The challenge of democracy : government in America 1999 - 2000 update (6).
Boston:
Houghton Mifflin Company.
Gaya MLA
Janda, Kenneth. et al.
"The challenge of democracy : government in America 1999 - 2000 update".
6
Boston:
Houghton Mifflin Company,
2000.
Text.