Epstein, S. (1960). The first book of measurement. F. Watts.
Lua i Stíl Chicago (17ú heag.)Epstein, Sam. The First Book of Measurement. New York: F. Watts, 1960.
Lua MLA (9ú heag.)Epstein, Sam. The First Book of Measurement. F. Watts, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.