TOYNE, P., & NEWBY, P. T. (1985). Techniques in human geography. Macmillan Education.
Lua i Stíl Chicago (17ú heag.)TOYNE, Peter, agus Peter T. NEWBY. Techniques in Human Geography. Houndmills: Macmillan Education, 1985.
Lua MLA (9ú heag.)TOYNE, Peter, agus Peter T. NEWBY. Techniques in Human Geography. Macmillan Education, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.