APA-viite (7. p.)
Marty, R. (1978). PISA. A programming system for interactive production of application software. Univ.
Chicago-viite (17. p.)
Marty, Rudolf. PISA. A Programming System for Interactive Production of Application Software. Zürich: Univ, 1978.
MLA-viite (9. p.)
Marty, Rudolf. PISA. A Programming System for Interactive Production of Application Software. Univ, 1978.
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