(1964). Teacher's manual for relativity of position and motion (Trial ed.). University of California.
Lua i Stíl Chicago (17ú heag.)Teacher's Manual for Relativity of Position and Motion. Trial ed. Berkeley, CA: University of California, 1964.
Lua MLA (9ú heag.)Teacher's Manual for Relativity of Position and Motion. Trial ed. University of California, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.