Ross, C. C. (1947). Measurement in today's schools (2d ed.). s.n.
Lua i Stíl Chicago (17ú heag.)Ross, Clay Campbell. Measurement in Today's Schools. 2d ed. New York: s.n, 1947.
Lua MLA (9ú heag.)Ross, Clay Campbell. Measurement in Today's Schools. 2d ed. s.n, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.