Gates, D. S. (1974). A self-instructional approach to the physical sciences ([Rev. ed.].). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Gates, David S. A Self-instructional Approach to the Physical Sciences. [Rev. ed.]. Englewood Cliffs, N.J.: Prentice-Hall, 1974.
Lua MLA (8ú heag.)Gates, David S. A Self-instructional Approach to the Physical Sciences. [Rev. ed.]. Prentice-Hall, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.