APA (7th ed.) Citation

Root, L. F. (1949). How a blast was confined to protect adjacent railroad tracks. Roads & Streets, 92, 50.

Chicago Style (17th ed.) Citation

Root, L. F. "How a Blast Was Confined to Protect Adjacent Railroad Tracks." Roads & Streets 92 (1949): 50.

MLA (9th ed.) Citation

Root, L. F. "How a Blast Was Confined to Protect Adjacent Railroad Tracks." Roads & Streets, vol. 92, 1949, p. 50.