Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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