APA (7th ed.) Citation

Wernstedt, F. L., & Spencer, J. E. (1967). The Philippine Island world: A physical, cultural, and regional geography. University of California Press.

Chicago Style (17th ed.) Citation

Wernstedt, Frederick L., and Joseph Earle Spencer. The Philippine Island World: A Physical, Cultural, and Regional Geography. Berkeley: University of California Press, 1967.

MLA (9th ed.) Citation

Wernstedt, Frederick L., and Joseph Earle Spencer. The Philippine Island World: A Physical, Cultural, and Regional Geography. University of California Press, 1967.