APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Wernstedt, Frederick L., and Joseph E. Spencer. The Philippine Island World: A Physical, Cultural, and Regional Geography. Berkeley [u.a.]: Univ. of California Press, 1967.

MLA (9th ed.) Citation

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