Nicholson, P., Gwilt, J., & Lowry, W. (1848). Principles of architecture: Comprising fundamental rules of the art, with their application to practice : also rules for shadows for the five orders (6th ed., rev. and corr.). Henry G. Bohn.

Nicholson, Peter, et al. Principles of Architecture: Comprising Fundamental Rules of the Art, with Their Application to Practice : Also Rules for Shadows for the Five Orders. 6th ed., rev. and corr. Henry G. Bohn, 1848.