Mennes, L., Tinbergen Jan, & Eaarden burg George J. (1969). Element of space in development planning. North Holland publishing company.
استشهاد بنمط شيكاغوMennes, L.B.M, Tinbergen Jan, و Eaarden burg George J. Element of Space in Development Planning. London: North Holland publishing company, 1969.
MLA استشهادMennes, L.B.M, et al. Element of Space in Development Planning. North Holland publishing company, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.