Cita APA

Hardy, C., Schofield, O., & George, C. F. (1983). Allergy to aminophylline.

Citación estilo Chicago

Hardy, C., O. Schofield, y C F. George. Allergy to Aminophylline. 1983.

Cita MLA

Hardy, C., O. Schofield, y C F. George. Allergy to Aminophylline. 1983.