Maister, D. H., Galford, R., & Green, C. (2021). Trusted Advisor (20th ed.). Free Press.
Lua i Stíl Chicago (17ú heag.)Maister, David H., Robert Galford, agus Charles Green. Trusted Advisor. 20th ed. New York: Free Press, 2021.
Lua MLA (9ú heag.)Maister, David H., et al. Trusted Advisor. 20th ed. Free Press, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.