APA (7 वां संस्करण) प्रशस्ति पत्र

Sandberg, J. (1991). Competence as intentional achievement: A phenomenographic study. RMIT, ERADU, Educational Research and Development Unit.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sandberg, Jörgen. Competence as Intentional Achievement: A Phenomenographic Study. Melbourne: RMIT, ERADU, Educational Research and Development Unit, 1991.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Sandberg, Jörgen. Competence as Intentional Achievement: A Phenomenographic Study. RMIT, ERADU, Educational Research and Development Unit, 1991.