Citazione APA

Allen, E. v. N. (1943). Specialties in medical practice. T. Nelson and sons.

Stile di citazione Chicago

Allen, Edgar van Nuys. Specialties in Medical Practice. New York, Edinburgh: T. Nelson and sons, 1943.

Citazione MLA

Allen, Edgar van Nuys. Specialties in Medical Practice. T. Nelson and sons, 1943.