Clark, G., & Geographers, A. o. A. (1981). The employment relation and spatial division of labor: A hypothesis. Routledge.
Lua i Stíl Chicago (17ú heag.)Clark, G., agus Association of American Geographers. The Employment Relation and Spatial Division of Labor: A Hypothesis. Routledge, 1981.
Lua MLA (9ú heag.)Clark, G., agus Association of American Geographers. The Employment Relation and Spatial Division of Labor: A Hypothesis. Routledge, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.