Goos, G., Hartmanis, J., Barstow, D., Brauer, W., Hansen, P. B., Gries, D., Luckham, D., Moler, C., Pnueli, A., Seegmüller, G., Stoer, J., Wirth, N., Gjessing, S., Nygaard, K., Laenens, E., & Vermeir, D. (1988). An Overview of OOPS+, an Object-Oriented Database Programming Language. https://doi.org/10.1007/3-540-45910-3_21
ISO-690 (author-date, English)GOOS, G., HARTMANIS, J., BARSTOW, D., BRAUER, W., HANSEN, P. Brinch, GRIES, D., LUCKHAM, D., MOLER, C., PNUELI, A., SEEGMÜLLER, G., STOER, J., WIRTH, N., GJESSING, Stein, NYGAARD, Kristen, LAENENS, Els und VERMEIR, Dirk, 1988. An Overview of OOPS+, an Object-Oriented Database Programming Language.
Modern Language Association 9th editionGoos, G., J. Hartmanis, D. Barstow, W. Brauer, P. B. Hansen, D. Gries, D. Luckham, C. Moler, A. Pnueli, G. Seegmüller, J. Stoer, N. Wirth, S. Gjessing, K. Nygaard, E. Laenens, und D. Vermeir. An Overview of OOPS+, an Object-Oriented Database Programming Language. 1988, https://doi.org/10.1007/3-540-45910-3_21.
Mohr Siebeck - Recht (Deutsch - Österreich)Goos, G./Hartmanis, J./Barstow, D./Brauer, W./Hansen, P. Brinch/Gries, D. u. a.: An Overview of OOPS+, an Object-Oriented Database Programming Language., 1988.
Emerald - HarvardGoos, G., Hartmanis, J., Barstow, D., Brauer, W., Hansen, P.B., Gries, D., Luckham, D., Moler, C., Pnueli, A., Seegmüller, G., Stoer, J., Wirth, N., Gjessing, S., Nygaard, K., Laenens, E. und Vermeir, D. (1988), An Overview of OOPS+, an Object-Oriented Database Programming Language., Bd. , verfügbar unter:https://doi.org/10.1007/3-540-45910-3_21.