APA (7th ed.) Citation

Wiil, U. K., & Leggett, J. J. (1997). Hyperform: A hypermedia system development environment. ACM Transactions on Information Systems, 15(1), 1. https://doi.org/10.1145/239041.239043

Chicago Style (17th ed.) Citation

Wiil, Uffe K., and John J. Leggett. "Hyperform: A Hypermedia System Development Environment." ACM Transactions on Information Systems 15, no. 1 (1997): 1. https://doi.org/10.1145/239041.239043.

MLA (9th ed.) Citation

Wiil, Uffe K., and John J. Leggett. "Hyperform: A Hypermedia System Development Environment." ACM Transactions on Information Systems, vol. 15, no. 1, 1997, p. 1, https://doi.org/10.1145/239041.239043.