Watson, J. A. (1984). Commercial roofing systems. Reston.
Chicago Style (17th ed.) CitationWatson, John A. Commercial Roofing Systems. Reston, Va: Reston, 1984.
MLA (9th ed.) CitationWatson, John A. Commercial Roofing Systems. Reston, 1984.
Warning: These citations may not always be 100% accurate.