O'Keefee, James H., The complete guide to ECGs : a comprehensive study guide to improve ECG interpretation skills / James H. O'Keefe, Stephen C. Hammill & Mark S. Freed. - xi, 615 pages : illustrations ; 28 cm. Includes index. ISBN: 9781284066340 RM384.56 Subjects--Topical Terms: Electrocardiography. Index Terms--Genre/Form: Examination Questions.