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- Klasifikasi Desimal Dewey Edisi 23 (Bahasa Indonesia) (4)
- 300 – Ilmu Sosial (4)
- 330 Ekonomi (4)
- 338 Produksi (4)
- 330 Ekonomi (4)
- 300 – Ilmu Sosial (4)
Article
Siagian, Valentine (2022) Good News on Public Restriction and Stock Prices in Indonesia. Management and Business Review, 6 (2). pp. 228-235.
Book
Mastarida, Friska and Sahir, Syafrida Hafni and Hasibuan, Abdurrozzaq and Siagian, Valentine and Hariningsih, Endang and Fajrillah, Fajrillah and Gustiana, Zelvi and Tjiptadi, Diena Dwidienawati and Pakpahan, Andrew Fernando (2022) Strategi Transformasi Digital. Yayasan Kita Menulis, Medan.
Siagian, Valentine and Yuniwati, Ika and Rahman, Abdul and Lifchatullaillah, Endang and Inayah, Astrina Nur and Hasyim, Nurbayani and Dewi, Idah Kusuma and Mistriani, Nina and Simarmata, Janner (2020) Pengantar Kewirausahaan. Yayasan Kita Menulis, Medan.
Siregar, Robert Tua and Rahmadana, Muhammad Fitri and Nainggolan, Pinondang and Basmar, Edwin and Siagian, Valentine (2021) Ekonomi Industri. Yayasan Kita Menulis, Medan.