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Sinaga, Johnson and Johansyah, Muhamad Deni and Amin, Akhsanul Buku Referensi Guide to Business Planning. UNIBI Press. ISBN 978-623-89346-1-4 (In Press)
Sinaga, Johnson and Johansyah, Muhamad Deni and Amin, Akhsanul Buku Referensi Innovation and Entrepreneurship. UNIBI Press. ISBN 978-623-89346-3-8 (In Press)
