Businger, A. (1985) PORTAL Language Description [cd], Lecture Notes in Computer Science. Berlin, Heidelberg: Springer-Verlag (Lecture Notes in Computer Science, 198). doi:10.1007/3-540-18960-2.
Chicago Manual of Style 17th edition (full note)Businger, Arnold. PORTAL Language Description. Cd. Lecture Notes in Computer Science. Lecture Notes in Computer Science 198. Berlin, Heidelberg: Springer-Verlag, [1985?], Berlin, Heidelberg: Springer-Verlag, [1985?]. https://doi.org/10.1007/3-540-18960-2.
American Psychological Association 7th editionBusinger, A. (ca. 1985). PORTAL Language Description [Cd]. In Lecture Notes in Computer Science. Springer-Verlag. https://doi.org/10.1007/3-540-18960-2
Modern Language Association 9th editionBusinger, A. „PORTAL Language Description“. Lecture Notes in Computer Science, cd, Springer-Verlag, 1985, https://doi.org/10.1007/3-540-18960-2.
ISO-690 (author-date, Deutsch)BUSINGER, Arnold, 1985. PORTAL Language Description. Berlin, Heidelberg: Springer-Verlag. Lecture Notes in Computer Science, 198. ISBN 9783540388609