Citace podle APA (7th ed.)
Brignano, M., & McCullough, M. The Search for Safety: A History of Railroad Signals and the People Who Made Them. American Standard.
Citace podle Chicago (17th ed.)
Brignano, Mary, a Max McCullough. The Search for Safety: A History of Railroad Signals and the People Who Made Them. Pittsburgh, EUA: American Standard.
Citace podle MLA (9th ed.)
Brignano, Mary, a Max McCullough. The Search for Safety: A History of Railroad Signals and the People Who Made Them. American Standard.
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