NAWCC Chapter 50, NAWCC Chapter 53, NAWCC Chapter 135, & Waddell, D. A. (1989). Street and tower clocks of the State of Washington. D.A. Waddell.
Cita Chicago Style (17a ed.)NAWCC Chapter 50, NAWCC Chapter 53, NAWCC Chapter 135, y D. A. Waddell. Street and Tower Clocks of the State of Washington. Tacoma, WA (521 No. Cushman, Tacoma 98403): D.A. Waddell, 1989.
Cita MLA (8a ed.)NAWCC Chapter 50, et al. Street and Tower Clocks of the State of Washington. D.A. Waddell, 1989.
Precaución: Estas citas no son 100% exactas.