Cita APA (7a ed.)

Heaton, J. (1980). Using prepositions and particles: Workbook three. Longman.

Cita Chicago Style (17a ed.)

Heaton, J.B. Using Prepositions and Particles: Workbook Three. London: Longman, 1980.

Cita MLA (9a ed.)

Heaton, J.B. Using Prepositions and Particles: Workbook Three. Longman, 1980.