Keller, G., Warrack, B., Bartel, H. Statistics for Management and Economics. Belmont: Wadsworth Publ. Co., 1988 987 с. 0-534-08622-5.
Keller, G., Warrack, B., Bartel, H. Statistics for Management and Economics. Belmont: Wadsworth Publ. Co., 1988 987 с. 0-534-08622-5.
Keller, G., Warrack, B., Bartel, H. (1988) Statistics for Management and Economics, Belmont: Wadsworth Publ. Co. 987 с. 0-534-08622-5.
Keller, G., Warrack, B., & Bartel, H. (1988). Statistics for Management and Economics. A Systematic Approach : [Учебник]. Belmont: Wadsworth Publ. Co., 987 с.
Keller G, Warrack B, Bartel H. Statistics for Management and Economics: A Systematic Approach : [Учебник]. Belmont: Wadsworth Publ. Co.; 1988. p. 987 с. ISBN: 0-534-08622-5.