APA Format
Lewis, James B; McGrath, Robert J; Seidel, Lee F. . (). Essentials of...: Trend forecasting techniques. ( Ket. lihat halaman 89-113 ) ( Bab. 6 ) . : Canada: Jones and Bartlett Publishers, 2011
MLA Format
Lewis, James B; McGrath, Robert J; Seidel, Lee F. . Essentials of...: Trend forecasting techniques. ( Ket. lihat halaman 89-113 ) ( Bab. 6 ) . : Canada: Jones and Bartlett Publishers, 2011,
Australian/Harvard Format
Lewis, James B; McGrath, Robert J; Seidel, Lee F. . . Essentials of...: Trend forecasting techniques. ( Ket. lihat halaman 89-113 ) ( Bab. 6 ) . Canada: Jones and Bartlett Publishers, 2011, 
Warning: These citations may not always be 100% accurate.