APA (7th ed.) Citation

Hooker, R. (1956). Aetna Life Insurance Company: Its first hundred years, a history. Ætna Life Insurance Co..

Chicago Style (17th ed.) Citation

Hooker, Richard. Aetna Life Insurance Company: Its First Hundred Years, a History. Hartford: Ætna Life Insurance Co., 1956.

MLA (9th ed.) Citation

Hooker, Richard. Aetna Life Insurance Company: Its First Hundred Years, a History. Ætna Life Insurance Co., 1956.