Friedman, A. L. (1990). Four phases of information technology. Implications for forecasting IT work. Futures, 22(8), 787-800. https://doi.org/10.1016/0016-3287(90)90016-b
ISO-690 (author-date, English)FRIEDMAN, A L, 1990. Four phases of information technology. Implications for forecasting IT work. Futures. 1 Oktober 1990. Vol. 22, no. 8, p. 787-800. DOI 10.1016/0016-3287(90)90016-b.
Modern Language Association 9th editionFriedman, A. L. „Four Phases of Information Technology. Implications for Forecasting IT Work.“. Futures, Bd. 22, Nr. 8, Oktober 1990, S. 787-00, https://doi.org/10.1016/0016-3287(90)90016-b.
Mohr Siebeck - Recht (Deutsch - Österreich)Friedman, A L: Four phases of information technology. Implications for forecasting IT work., Futures 1990, 787-800.
Emerald - HarvardFriedman, A.L. (1990), „Four phases of information technology. Implications for forecasting IT work.“, Futures, Vol. 22 No. 8, S. 787-800.