APA Style

Grant, E, L. et al (1976). Principles of Engineering Economy (6th ed.) / Eugene L. Grant, W. Grant Ireson and Richard S. Leavenworth (6). New York: Ronald Press Co..

MLA Style

Grant, Eugene, L.. et al. "Principles of Engineering Economy (6th ed.) / Eugene L. Grant, W. Grant Ireson and Richard S. Leavenworth". 6 New York: Ronald Press Co., 1976. Textbook ห้องสมุดทั่วไป.