APA
Jayne Jall Parker, . (1987). My speech Workbook : a remedial workbook for the "TH" sound. Illinois: Interstate Printers & Publishers.
Chicago
Jayne Jall Parker, . 1987. My speech Workbook : a remedial workbook for the "TH" sound. Illinois: Interstate Printers & Publishers.
Harvard
Jayne Jall Parker, . (1987). My speech Workbook : a remedial workbook for the "TH" sound. Illinois: Interstate Printers & Publishers.
MLA
Jayne Jall Parker, . My speech Workbook : a remedial workbook for the "TH" sound. Illinois: Interstate Printers & Publishers. 1987.
