Tiryakian, E. A. (2007). Pitirim A. Sorokin. In G. Ritzer (Ed.), The Blackwell Encyclopedia of Sociology (Vol. IX, pp. 4619–4623). Oxford & Malden, MA: Blackwell Publishing.

Tiryakian, E. A. “Pitirim A. Sorokin.” In The Blackwell Encyclopedia of Sociology, edited by G. Ritzer, IX:4619–23. Oxford & Malden, MA: Blackwell Publishing, 2007.

Tiryakian EA. Pitirim A. Sorokin. In: Ritzer G, editor. The Blackwell Encyclopedia of Sociology. Oxford & Malden, MA: Blackwell Publishing; 2007. p. 4619–23.

Tiryakian, E. A. “Pitirim A. Sorokin.” The Blackwell Encyclopedia of Sociology, edited by G. Ritzer, vol. IX, Blackwell Publishing, 2007, pp. 4619–23.

Tiryakian EA. Pitirim A. Sorokin. In: Ritzer G, editor. The Blackwell Encyclopedia of Sociology. Oxford & Malden, MA: Blackwell Publishing; 2007. p. 4619–4623.