Samson, M. D. V. A numenclature scheme for permutations of the set of natural numbers. Philippine computing journal.
Citazione stile Chigago Style (17a edizione)Samson, Michael Daniel V. "A Numenclature Scheme for Permutations of the Set of Natural Numbers." Philippine Computing Journal .
Citatione MLA (9a ed.)Samson, Michael Daniel V. "A Numenclature Scheme for Permutations of the Set of Natural Numbers." Philippine Computing Journal, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.