Shaffer, L. R., Meyer, W., & Ritter, J. (1965). The critical-path method. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Shaffer, Louis Richard, W.L Meyer, agus J.B Ritter. The Critical-path Method. New York: McGraw-Hill, 1965.
Lua MLA (9ú heag.)Shaffer, Louis Richard, et al. The Critical-path Method. McGraw-Hill, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.