Cita APA (7a ed.)

Wolters, P. H. The Bussard: P. H. Wolters. Schroën.

Cita Chicago Style (17a ed.)

Wolters, Peter Hubert. The Bussard: P. H. Wolters. Heythuysen, Holland: Schroën.

Cita MLA (8a ed.)

Wolters, Peter Hubert. The Bussard: P. H. Wolters. Schroën.