Seferian, H., & Whitcomb, C. (2004). Hardscaping: High style, low maintenance outdoor spaces. McGraw-Hill Professional.
Cita Chicago Style (17a ed.)Seferian, Haig, y Claire Whitcomb. Hardscaping: High Style, Low Maintenance Outdoor Spaces. New York, NY: McGraw-Hill Professional, 2004.
Cita MLA (8a ed.)Seferian, Haig, y Claire Whitcomb. Hardscaping: High Style, Low Maintenance Outdoor Spaces. McGraw-Hill Professional, 2004.
Precaución: Estas citas no son 100% exactas.