Cita APA (7a ed.)

Berry, C. (2011). The sustainable procurement guide: Procuring sustainably using BS 8903. BSi.

Cita Chicago Style (17a ed.)

Berry, Cathy. The Sustainable Procurement Guide: Procuring Sustainably Using BS 8903. London: BSi, 2011.

Cita MLA (8a ed.)

Berry, Cathy. The Sustainable Procurement Guide: Procuring Sustainably Using BS 8903. BSi, 2011.