APA
Petrick S. R., Association for Computing Machinery, ACM Special Interest Group on Numerical Mathematics, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Programming Languages & ACM Special Interest Group on Symbolic and Algebraic Manipulation. (1971). Proceedings of the second ACM symposium on Symbolic and algebraic manipulation. New York, NY: ACM.
Chicago
Petrick S R, Association for Computing Machinery, ACM Special Interest Group on Numerical Mathematics, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Programming Languages and ACM Special Interest Group on Symbolic and Algebraic Manipulation. 1971. Proceedings of the second ACM symposium on Symbolic and algebraic manipulation. New York, NY: ACM.
Harvard
Petrick S. R., Association for Computing Machinery, ACM Special Interest Group on Numerical Mathematics, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Programming Languages and ACM Special Interest Group on Symbolic and Algebraic Manipulation. (1971). Proceedings of the second ACM symposium on Symbolic and algebraic manipulation. New York, NY: ACM.
MLA
Petrick S R, Association for Computing Machinery, ACM Special Interest Group on Numerical Mathematics, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Programming Languages and ACM Special Interest Group on Symbolic and Algebraic Manipulation. Proceedings of the second ACM symposium on Symbolic and algebraic manipulation. New York, NY: ACM. 1971.