APA (7th ed.) Zitazioa
Wirshing, J. R., & Wirshing, R. H. (1985). Theory and Problem of Introductory Surveying. McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Wirshing, James R., eta Roy H. Wirshing. Theory and Problem of Introductory Surveying. New York: McGraw-Hill, 1985.
MLA (9th ed.) Zitazioa
Wirshing, James R., eta Roy H. Wirshing. Theory and Problem of Introductory Surveying. McGraw-Hill, 1985.
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