APA (7th ed.) Citation

O'Hara, L. J. (1989). An emerging profession: Philadelphia doctors, 1860 - 1900. Garland.

Chicago Style (17th ed.) Citation

O'Hara, Leo James. An Emerging Profession: Philadelphia Doctors, 1860 - 1900. New York [u.a.]: Garland, 1989.

MLA (9th ed.) Citation

O'Hara, Leo James. An Emerging Profession: Philadelphia Doctors, 1860 - 1900. Garland, 1989.

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