Berger, H. (2009). Automating with STEP 7 in STL and SCL: Programmable controllers SIMATIC S7-300/400 (5th rev. and enlarged ed.). Publicis Pub.
Chicago-viite (17. p.)Berger, Hans. Automating with STEP 7 in STL and SCL: Programmable Controllers SIMATIC S7-300/400. 5th rev. and enlarged ed. Erlangen: Publicis Pub, 2009.
MLA-viite (8. p.)Berger, Hans. Automating with STEP 7 in STL and SCL: Programmable Controllers SIMATIC S7-300/400. 5th rev. and enlarged ed. Publicis Pub, 2009.
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