Robinson, Colin
Business forecasting : an economic approach
Nelson, 1971
 Buku Teks
Company organization for economic forecasting : keeping informed on the business outlook
edited by Elizabeth Marting
American Management Association , 1957
 Buku Teks
Hanke, John E.
Business forecasting
Pearson - Prentice Hall, 2009
 Buku Teks
Annisa Cipta Nabila
Penerapan Model Zhang?s Hybrid untuk Peramalan Permintaan pada Metode Economic Order Quantity = Application of Zhang’s Hybrid Model in Demand forecasting for Economic Order Quantity Method
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
 UI - Skripsi (Membership)
Hanke, John E.
Business forecasting
Prentice Halls, 2001
 Buku Teks