Interregional Seminar on Development Planning (1st : Ankara : 1965) & United Nations. (1967). Planning the external sector: Techniques, problems and policies. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Interregional Seminar on Development Planning (1st : Ankara : 1965) και United Nations. Planning the External Sector: Techniques, Problems and Policies. New York: United Nations, 1967.
Παραπομπή σε μορφή MLA (9th εκδ.)Interregional Seminar on Development Planning (1st : Ankara : 1965) και United Nations. Planning the External Sector: Techniques, Problems and Policies. United Nations, 1967.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.