Cita APA (7a ed.)

Murray, W., & Wingfield, J. H. (1964). Look at this. Ladybird Books.

Cita Chicago Style (17a ed.)

Murray, William, y J. H. Wingfield. Look at This. Loughborough: Ladybird Books, 1964.

Cita MLA (9a ed.)

Murray, William, y J. H. Wingfield. Look at This. Ladybird Books, 1964.