APA (7th ed.) Citation

Helsgaun, K. (1984). Backtrack programming with SIMULA. Computer Journal, 27, 151. https://doi.org/10.1093/comjnl/27.2.151

Chicago Style (17th ed.) Citation

Helsgaun, Keld. "Backtrack Programming with SIMULA." Computer Journal 27 (1984): 151. https://doi.org/10.1093/comjnl/27.2.151.

MLA (9th ed.) Citation

Helsgaun, Keld. "Backtrack Programming with SIMULA." Computer Journal, vol. 27, 1984, p. 151, https://doi.org/10.1093/comjnl/27.2.151.