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Citation styles for Luhn test of credit card numbers

APA style

Luhn test of credit card numbers. (2025, February 11). Rosetta Code. Retrieved 08:29, April 21, 2025 from https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856.

MLA style

"Luhn test of credit card numbers." Rosetta Code. 11 Feb 2025, 09:49 UTC. 21 Apr 2025, 08:29 <https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856>.

MHRA style

Rosetta Code contributors, 'Luhn test of credit card numbers', Rosetta Code, 11 February 2025, 09:49 UTC, <https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856> [accessed 21 April 2025]

Chicago style

Rosetta Code contributors, "Luhn test of credit card numbers," Rosetta Code, https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856 (accessed April 21, 2025).

CBE/CSE style

Rosetta Code contributors. Luhn test of credit card numbers [Internet]. Rosetta Code; 2025 Feb 11, 09:49 UTC [cited 2025 Apr 21]. Available from: https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856.

Bluebook style

Luhn test of credit card numbers, https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856 (last visited April 21, 2025).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Rosetta Code",
   title = "Luhn test of credit card numbers --- Rosetta Code{,} ",
   year = "2025",
   url = "https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856",
   note = "[Online; accessed 21-April-2025]"
 }

When using the LaTeX package url (\usepackage{url} somewhere in the preamble) which tends to give much more nicely formatted web addresses, the following may be preferred:

 @misc{ wiki:xxx,
   author = "Rosetta Code",
   title = "Luhn test of credit card numbers --- Rosetta Code{,} ",
   year = "2025",
   url = "\url{https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers?oldid=376856}",
   note = "[Online; accessed 21-April-2025]"
 }