Gaya APA

Barro, R, J., Sala-i-Martin, X. (1995). Economic growth (Internnational Editions 1995). New York: McGraw-Hill, Inc.

Gaya MLA

Barro, Robert, J.., Sala-i-Martin, Xavier. "Economic growth". Internnational Editions 1995 New York: McGraw-Hill, Inc, 1995. Text.