APA

Stevens D., Harpur J., . (2007). The room outside: designing your perfect outdoor living space. New York: Sterling.

Chicago

Stevens David, Harpur Jerry, . 2007. The room outside: designing your perfect outdoor living space. New York: Sterling.

Harvard

Stevens D., Harpur J., . (2007). The room outside: designing your perfect outdoor living space. New York: Sterling.

MLA

Stevens David, Harpur Jerry, . The room outside: designing your perfect outdoor living space. New York: Sterling. 2007.