Citazione Stile APA (7a Edizione)

Spencer, J. E. (1954). Land and people in the Philippines: Geographic problems in rural economy. University of California Press.

Citazione stile Chigago Style (17a edizione)

Spencer, Joseph Earle. Land and People in the Philippines: Geographic Problems in Rural Economy. Berkeley: University of California Press, 1954.

Citatione MLA (9a ed.)

Spencer, Joseph Earle. Land and People in the Philippines: Geographic Problems in Rural Economy. University of California Press, 1954.