NERO, A. B. (1988). Essential Skills In Geography A Workbook Of Basic Geographics Concepts Ann Briscoe Nero; Editor: Barbara Radner. Rand McNally & Company.
Lua i Stíl Chicago (17ú heag.)NERO, Ann Briscoe. Essential Skills In Geography A Workbook Of Basic Geographics Concepts Ann Briscoe Nero; Editor: Barbara Radner. Rand McNally & Company, 1988.
Lua MLA (8ú heag.)NERO, Ann Briscoe. Essential Skills In Geography A Workbook Of Basic Geographics Concepts Ann Briscoe Nero; Editor: Barbara Radner. Rand McNally & Company, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.