Lua APA (7ú heag.)
Pearson, B., & Zehr, D. (2011). Pre-commerce: How companies and customers are transforming business together. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)
Pearson, Bob, agus Dan Zehr. Pre-commerce: How Companies and Customers Are Transforming Business Together. San Francisco: Jossey-Bass, 2011.
Lua MLA (9ú heag.)
Pearson, Bob, agus Dan Zehr. Pre-commerce: How Companies and Customers Are Transforming Business Together. Jossey-Bass, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.