APA
Welsh D J A Ed, Conference on the combinatorial mathematics and its applicationns (1969 : oxford), . (1971). Proceeding on Combinatorial mathematics and applications. : .
Chicago
Welsh D J A Ed, Conference on the combinatorial mathematics and its applicationns (1969 : oxford), . 1971. Proceeding on Combinatorial mathematics and applications. : .
Harvard
Welsh D J A Ed, Conference on the combinatorial mathematics and its applicationns (1969 : oxford), . (1971). Proceeding on Combinatorial mathematics and applications. : .
MLA
Welsh D J A Ed, Conference on the combinatorial mathematics and its applicationns (1969 : oxford), . Proceeding on Combinatorial mathematics and applications. : . 1971.
