RAILROAD TRACK, FRITZFASTENRATH [ed], & GRANT, W. [. (1981). Railroad track theory and practice. Frederick Ungar.
Chicago-viite (17. p.)RAILROAD TRACK, FRITZFASTENRATH [ed], ja Walter [pnj] GRANT. Railroad Track Theory and Practice. New York: Frederick Ungar, 1981.
MLA-viite (9. p.)RAILROAD TRACK, et al. Railroad Track Theory and Practice. Frederick Ungar, 1981.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.