APA (7e ed.) Bronvermelding

Ball, J. M., Steinbrink, J. E., & Stoltman, J. P. (1971). The social sciences and geographic education: A reader. John Wiley.

Chicago (17e ed.) Bronvermelding

Ball, John M., John E. Steinbrink, en Joseph P. Stoltman. The Social Sciences and Geographic Education: A Reader. Nueva York: John Wiley, 1971.

MLA (9e ed.) Bronvermelding

Ball, John M., et al. The Social Sciences and Geographic Education: A Reader. John Wiley, 1971.