Παραπομπή APA

Zeylstra, W. G. (1977). Aid or development: The relevance of development aid to problems of developing countries. Leyden: A.W.Sijthoff.

Παραπομπή Chicago Style

Zeylstra, Willem Gustaaf. Aid or Development: The Relevance of Development Aid to Problems of Developing Countries. Leyden: A.W.Sijthoff, 1977.

Παραπομπή MLA

Zeylstra, Willem Gustaaf. Aid or Development: The Relevance of Development Aid to Problems of Developing Countries. Leyden: A.W.Sijthoff, 1977.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.