Παραπομπή APA

Mennes, L., Tinbergen Jan, & Eaarden burg George J. (1969). Element of space in development planning. North Holland publishing company.

Παραπομπή Chicago Style

Mennes, L.B.M, Tinbergen Jan, και Eaarden burg George J. Element of Space in Development Planning. London: North Holland publishing company, 1969.

Παραπομπή MLA

Mennes, L.B.M, et al. Element of Space in Development Planning. North Holland publishing company, 1969.