J.D. Ichbiah, J.C. Heliard, O. Roubine, J.G.P. Barnes, B. Krieg-Brueckner, B.A. Wichmann, "Reference manual for the Ada programming language"

[SIGPLAN] (1979) SIGPLAN Notices 14(06) June 1979  

Languages mentioned Ada {1979} US DoD general purpose language