"The golden rectangle is a geometric figure which contains within it a scale of relationships. Celebrated by the ancient Greeks, the golden mean was probably not used widely in Renaissance architecture, but gained popularity in the twentieth century by Modernist and Beaux-Arts architects alike. The golden rectangle can be subdivided into a square and another smaller golden rectangle. The relationship between the length and width of the rectangle is governed by the golden mean." Gargus, 341
Gargus, J. (1994). Ideas of Order: A Formal Approach to Architecture. Dubuque, Iowa: Kendall/Hunt Pub. Co. p. 341-342.