Birchal, H. F. (1956). Modern surveying for civil engineers: The practice of surveying, estimating and setting out works of all kinds including chapters on modern photographic and aerial surveying as applied to engineering enterprises (2d ed., rev.). Philosophical Library.
Chicago Style (17th ed.) CitationBirchal, Harold Frank. Modern Surveying for Civil Engineers: The Practice of Surveying, Estimating and Setting Out Works of All Kinds Including Chapters on Modern Photographic and Aerial Surveying as Applied to Engineering Enterprises. 2d ed., rev. [New York]: Philosophical Library, 1956.
MLA (9th ed.) CitationBirchal, Harold Frank. Modern Surveying for Civil Engineers: The Practice of Surveying, Estimating and Setting Out Works of All Kinds Including Chapters on Modern Photographic and Aerial Surveying as Applied to Engineering Enterprises. 2d ed., rev. Philosophical Library, 1956.