APA (7th ed.) Citation

Krogdahl, S., & Olsen, K. A. (1986). Ada, as seen from Simula. Software: Practice & Experience, 16, 689.

Chicago Style (17th ed.) Citation

Krogdahl, S., and K. A. Olsen. "Ada, as Seen from Simula." Software: Practice & Experience 16 (1986): 689.

MLA (9th ed.) Citation

Krogdahl, S., and K. A. Olsen. "Ada, as Seen from Simula." Software: Practice & Experience, vol. 16, 1986, p. 689.