Gaya APA

Gujarati, D, N., Porter, D, C. (2010). Essentials Of Economitrics (4th ed). New York: Mc Graw Hill.

Gaya MLA

Gujarati, Damodar, N.., Porter, Dawn, C.. "Essentials Of Economitrics". 4th ed New York: Mc Graw Hill, 2010. Text.