Supadiyo, M. (1973). RISALAH SEMINAR RERUMPUTAN BPPM/WSSI (WITH ENGLISH SUMMARIES), MEDAN SEPTEMBER 1973. BPP Medan.
Chicago-viite (17. p.)Supadiyo, Mangunsukarjo. RISALAH SEMINAR RERUMPUTAN BPPM/WSSI (WITH ENGLISH SUMMARIES), MEDAN SEPTEMBER 1973. BPP Medan, 1973.
MLA-viite (8. p.)Supadiyo, Mangunsukarjo. RISALAH SEMINAR RERUMPUTAN BPPM/WSSI (WITH ENGLISH SUMMARIES), MEDAN SEPTEMBER 1973. BPP Medan, 1973.
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