APA (7th ed.) Citation

Felten, J. E. (1999). Light Echoes of Nova Persei 1901.

Chicago Style (17th ed.) Citation

Felten, James E. Light Echoes of Nova Persei 1901. 1999.

MLA (9th ed.) Citation

Felten, James E. Light Echoes of Nova Persei 1901. 1999.

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