APA (7th ed.) Citation

Ambos-Spies, K., & Nies, A. (1992). Cappable recursively enumerable degrees and Post's program. Archive for mathematical logic, 32(1), . https://doi.org/10.1007/BF01270394

Chicago Style (17th ed.) Citation

Ambos-Spies, Klaus, and André Nies. "Cappable Recursively Enumerable Degrees and Post's Program." Archive for Mathematical Logic 32, no. 1 (1992). https://doi.org/10.1007/BF01270394.

MLA (9th ed.) Citation

Ambos-Spies, Klaus, and André Nies. "Cappable Recursively Enumerable Degrees and Post's Program." Archive for Mathematical Logic, vol. 32, no. 1, 1992, https://doi.org/10.1007/BF01270394.