APA-viite (7. p.)

Istadi, I. (2017). Preface. Department of Chemical Engineering - Diponegoro University.

Chicago-viite (17. p.)

Istadi, Istadi. Preface. Department of Chemical Engineering - Diponegoro University, 2017.

MLA-viite (8. p.)

Istadi, Istadi. Preface. Department of Chemical Engineering - Diponegoro University, 2017.

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