Lua APA (7ú heag.)
Punmia, B., & Jain, A. K. (1994). Surveying: Vol. 1 (13th ed.). Laxmi Publications (p) LTD.
Lua i Stíl Chicago (17ú heag.)
Punmia, B.C, agus Ashok Kumar Jain. Surveying: Vol. 1. 13th ed. New Delhi: Laxmi Publications (p) LTD, 1994.
Lua MLA (9ú heag.)
Punmia, B.C, agus Ashok Kumar Jain. Surveying: Vol. 1. 13th ed. Laxmi Publications (p) LTD, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.