ROBINSON, A., SALE, R., & MORRISON, J. (1978). Elements of cartography.-- ed.4. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)ROBINSON, Arthur, Randall SALE, agus Joel MORRISON. Elements of Cartography.-- Ed.4. New York: John Wiley and Sons, 1978.
Lua MLA (9ú heag.)ROBINSON, Arthur, et al. Elements of Cartography.-- Ed.4. John Wiley and Sons, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.