Cita APA (7th ed.)
Duijvestijn, A., & Eykhoff, P. (1967). Journal of engineering mathematics. Noordhoff.
Cita Chicago (17th ed.)
Duijvestijn, A.J.W, i P. Eykhoff. Journal of Engineering Mathematics. Groningen: Noordhoff, 1967.
Cita MLA (9th ed.)
Duijvestijn, A.J.W, i P. Eykhoff. Journal of Engineering Mathematics. Noordhoff, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.