Cita APA (7a ed.)

Clay, N. L. (1947). English exercises; book three, material for a year's oral and written work in grammar and composition. Heinemann (L.).

Cita Chicago Style (17a ed.)

Clay, N. L. English Exercises; Book Three, Material for a Year's Oral and Written Work in Grammar and Composition. London: Heinemann (L.), 1947.

Cita MLA (8a ed.)

Clay, N. L. English Exercises; Book Three, Material for a Year's Oral and Written Work in Grammar and Composition. Heinemann (L.), 1947.