- Author: Hal Varian and Ted Bergstrom
- Language: English
JSTOR: A History
pdf
- Author: Roger C. Schonfeld, Hal Varian
- Language: English
- Year: 2012
JSTOR: A History
epub
- Author: Roger C. Schonfeld, Hal Varian, William G. Bowen
- Language: English
- Year: 2003
- Author: Hal Varian
- Language: Portuguese
- Year: 2015
- Author: Hal Varian
- Language: Spanish
- Year: 1993