APA Style
Lusardi, D, M. (2004).
The New Book of Knowledge, Volume 21 (New Book of Knowledge) (21th Edition).
United Stated:
The Book Of Knowlege.
MLA Style
Lusardi, Donna, M.
"The New Book of Knowledge, Volume 21 (New Book of Knowledge)".
21th Edition
United Stated:
The Book Of Knowlege,
2004.
Text.