Citazione Stile APA (7a Edizione)

Williams, H. L., & Williams, O. K. (1967). America´s small houses. Barnes and Company.

Citazione stile Chigago Style (17a edizione)

Williams, Henry Lionel, e Ottalie K. Williams. America´s Small Houses. New York: Barnes and Company, 1967.

Citatione MLA (8a ed.)

Williams, Henry Lionel, e Ottalie K. Williams. America´s Small Houses. Barnes and Company, 1967.