APA (7th ed.) Citation

Asadulla, S. Even perfect numbers and their Euler's function. Wiley.

Chicago Style (17th ed.) Citation

Asadulla, Syed. Even Perfect Numbers and Their Euler's Function. Wiley.

MLA (9th ed.) Citation

Asadulla, Syed. Even Perfect Numbers and Their Euler's Function. Wiley.

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