Lua APA (7ú heag.)

PUNMIA B C. (2014). SURVEYING VOL III (15TH ED.). LAXMI PUBLICATIONS PVT LTD.

Lua i Stíl Chicago (17ú heag.)

PUNMIA B C. SURVEYING VOL III. 15TH ED. BANGALORE: LAXMI PUBLICATIONS PVT LTD, 2014.

Lua MLA (9ú heag.)

PUNMIA B C. SURVEYING VOL III. 15TH ED. LAXMI PUBLICATIONS PVT LTD, 2014.

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