Gaya APA

Guth, S, R. (2009). Project procurement management : a guide to structured procurements (1st. Ed.). Alexandria, Virginia, US: Guth Ventures LLC.

Gaya MLA

Guth, Stephen, R. "Project procurement management : a guide to structured procurements". 1st. Ed. Alexandria, Virginia, US: Guth Ventures LLC, 2009. Text.