Betty Schrampfer Azar,, Rachel Spack Koch, Susan Jamieson, Barbara Andrews, & Jeanie Francis. (1990). Understanding and Using English grammar: Workbook. USA: Prentice hall regents.
Stile di citazione ChicagoBetty Schrampfer Azar,, Rachel Spack Koch, Susan Jamieson, Barbara Andrews, e Jeanie Francis. Understanding and Using English Grammar: Workbook. USA: Prentice hall regents, 1990.
Citazione MLABetty Schrampfer Azar,, et al. Understanding and Using English Grammar: Workbook. USA: Prentice hall regents, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.