APA (7th ed.) Citation

Halsema, J. J. (1991). E. J. Halsema, colonial engineer: A biography. New Day Publishers.

Chicago Style (17th ed.) Citation

Halsema, James J. E. J. Halsema, Colonial Engineer: A Biography. Quezon City: New Day Publishers, 1991.

MLA (9th ed.) Citation

Halsema, James J. E. J. Halsema, Colonial Engineer: A Biography. New Day Publishers, 1991.