Cita APA (7th ed.)

Summerfield, G. (1968). Voices: An anthology of poetry and pictures (Third edition.). Penguin Education.

Cita Chicago (17th ed.)

Summerfield, Goeffrey. Voices: An Anthology of Poetry and Pictures. Third edition. Harmondsworth: Penguin Education, 1968.

Cita MLA (9th ed.)

Summerfield, Goeffrey. Voices: An Anthology of Poetry and Pictures. Third edition. Penguin Education, 1968.