Cita APA (7th ed.)

Halsema, J. J. (1987). E.J. Halsema--colonial engineer (X). E.J. Halsema--colonial engineer (X)..

Cita Chicago (17th ed.)

Halsema, James J. "E.J. Halsema--colonial Engineer (X)." E.J. Halsema--colonial Engineer (X). 1987.

Cita MLA (9th ed.)

Halsema, James J. "E.J. Halsema--colonial Engineer (X)." E.J. Halsema--colonial Engineer (X)., 1987.