Lua APA (7ú heag.)
Seltzer, R., & Ochs, H. L. (2010). Gratuity: A contextual understanding of tipping norms from the perspective of tipped employees. Rowman & Littlefield.
Lua i Stíl Chicago (17ú heag.)
Seltzer, Richard, agus Holona LeAnne Ochs. Gratuity: A Contextual Understanding of Tipping Norms from the Perspective of Tipped Employees. Lanham, Md.: Rowman & Littlefield, 2010.
Lua MLA (9ú heag.)
Seltzer, Richard, agus Holona LeAnne Ochs. Gratuity: A Contextual Understanding of Tipping Norms from the Perspective of Tipped Employees. Rowman & Littlefield, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.