Cita APA (7a ed.)

Porter Ladousse, G. (1983). Speaking personally: Quizzes and questionnaires for fluency practice (1st. ed.). Cambridge University.

Cita Chicago Style (17a ed.)

Porter Ladousse, Gillian. Speaking Personally: Quizzes and Questionnaires for Fluency Practice. 1st. ed. Cambridge: Cambridge University, 1983.

Cita MLA (9a ed.)

Porter Ladousse, Gillian. Speaking Personally: Quizzes and Questionnaires for Fluency Practice. 1st. ed. Cambridge University, 1983.