Gray, A. (1969). Mathematics for the college students. Glencoe Press.
Lua i Stíl Chicago (17ú heag.)Gray, A. Mathematics for the College Students. London: Glencoe Press, 1969.
Lua MLA (9ú heag.)Gray, A. Mathematics for the College Students. Glencoe Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.