Não informado. (1964). Index of Conference Proceedings Received by the NLL. National Lending Library for Science and Technology.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Index of Conference Proceedings Received by the NLL. Boston, Inglaterra: National Lending Library for Science and Technology, 1964.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Index of Conference Proceedings Received by the NLL. National Lending Library for Science and Technology, 1964.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.