Παραπομπή APA

Keulen, T. V. (1995). Flying with flight simulation: Be an expert. Het Spectrum.

Παραπομπή Chicago Style

Keulen, Theo Van. Flying with Flight Simulation: Be an Expert. London: Het Spectrum, 1995.

Παραπομπή MLA

Keulen, Theo Van. Flying with Flight Simulation: Be an Expert. Het Spectrum, 1995.