Παραπομπή APA
Welsh, D. J. A. (1971). Combinatorial mathematics and its applications: Proceedings of a conference held at the Mathematical Institute, Oxford, from 7-10 July, 1969. London: Academic Press.
Παραπομπή Chicago StyleWelsh, D. J. A. Combinatorial Mathematics and Its Applications: Proceedings of a Conference Held At the Mathematical Institute, Oxford, From 7-10 July, 1969. London: Academic Press, 1971.
Παραπομπή MLAWelsh, D. J. A. Combinatorial Mathematics and Its Applications: Proceedings of a Conference Held At the Mathematical Institute, Oxford, From 7-10 July, 1969. London: Academic Press, 1971.
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