APA

RICHARDS JACK HULL JONATHAN PROCTOR SUSAN, . (1994). INTERCHANGE WORKBOOK 1. : .

Chicago

RICHARDS JACK HULL JONATHAN PROCTOR SUSAN, . 1994. INTERCHANGE WORKBOOK 1. : .

Harvard

RICHARDS JACK HULL JONATHAN PROCTOR SUSAN, . (1994). INTERCHANGE WORKBOOK 1. : .

MLA

RICHARDS JACK HULL JONATHAN PROCTOR SUSAN, . INTERCHANGE WORKBOOK 1. : . 1994.