Watson, D. S. (1968). Price theory and its uses (2d ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Watson, Donald Stevenson. Price Theory and Its Uses. 2d ed. New York: Houghton Mifflin, 1968.
Lua MLA (9ú heag.)Watson, Donald Stevenson. Price Theory and Its Uses. 2d ed. Houghton Mifflin, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.