Johns Hopkins University. Applied Physics Laboratory, Johns Hopkins University Applied Physics Laboratory Symposium on the Role of Language in Problem Solving (2nd : 1986), Boudreaux, J. 1. . . . .., Hamill, B. W., & Jernigan, R. (1987). The role of language in problem solving 2: Edited proceedings of the John Hopkins University Applied Physics Laboratory Second Symposium on the Role of Language in Problem Solving, held in Laurel, Maryland, 2-4 April, 1986. North-Holland.

Johns Hopkins University. Applied Physics Laboratory, Johns Hopkins University Applied Physics Laboratory Symposium on the Role of Language in Problem Solving (2nd : 1986), J.C. 1944- Boudreaux, Bruce W. Hamill, and Robert Jernigan. The Role of Language in Problem Solving 2: Edited Proceedings of the John Hopkins University Applied Physics Laboratory Second Symposium on the Role of Language in Problem Solving, Held in Laurel, Maryland, 2-4 April, 1986. Amsterdam: North-Holland, 1987.

Johns Hopkins University. Applied Physics Laboratory, et al. The Role of Language in Problem Solving 2: Edited Proceedings of the John Hopkins University Applied Physics Laboratory Second Symposium on the Role of Language in Problem Solving, Held in Laurel, Maryland, 2-4 April, 1986. North-Holland, 1987.