Berry, B. J. L. (1967). Geography of market centers and retail distribution. [s.n.].
Lua i Stíl Chicago (17ú heag.)Berry, Brian Joe Loblay. Geography of Market Centers and Retail Distribution. Englewood Cliffs: [s.n.], 1967.
Lua MLA (9ú heag.)Berry, Brian Joe Loblay. Geography of Market Centers and Retail Distribution. [s.n.], 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.