Citazione Stile APA (7a Edizione)

Brunn, S. D., & Entrikin, J. N. (1989). Reflections on Richard Hartshorne's The nature of geography. Association of American Geographers.

Citazione stile Chigago Style (17a edizione)

Brunn, Stanley D., e J. Nicholas Entrikin. Reflections on Richard Hartshorne's The Nature of Geography. Washington, D.C: Association of American Geographers, 1989.

Citatione MLA (9a ed.)

Brunn, Stanley D., e J. Nicholas Entrikin. Reflections on Richard Hartshorne's The Nature of Geography. Association of American Geographers, 1989.