APA (7th ed.) Citation

Ericksen, L. DIVISIBITY, ITERATED DIGIT SUMS, PRIMALITY TESTS.

Chicago Style (17th ed.) Citation

Ericksen, Larry. DIVISIBITY, ITERATED DIGIT SUMS, PRIMALITY TESTS.

MLA (9th ed.) Citation

Ericksen, Larry. DIVISIBITY, ITERATED DIGIT SUMS, PRIMALITY TESTS.

Warning: These citations may not always be 100% accurate.