Gaya APA

Keller, G., Brian, I, W. (1990). Soluton manual for statistics for management and economics a systematic ì approach . California: California: Wadsworrth Publishing Company; 1990.

Gaya MLA

Keller, Gerald., Brian, I., Warrack,. "Soluton manual for statistics for management and economics a systematic ì approach". California: California: Wadsworrth Publishing Company; 1990, 1990. Text.