APA (7th ed.) Citation

(1991). Machine learning: EWSL 91, European Working Session on Learning, Porto, Portugal, March 6-8, 1991 ; proceedings. Springer.

Chicago Style (17th ed.) Citation

Machine Learning: EWSL 91, European Working Session on Learning, Porto, Portugal, March 6-8, 1991 ; Proceedings. Berlin u.a: Springer, 1991.

MLA (9th ed.) Citation

Machine Learning: EWSL 91, European Working Session on Learning, Porto, Portugal, March 6-8, 1991 ; Proceedings. Springer, 1991.