Cita APA (7a ed.)

Leaf, M. (1950). Grammar can be fun. Ward, Lock & Co.

Cita Chicago Style (17a ed.)

Leaf, Munro. Grammar Can Be Fun. London and Melbourne: Ward, Lock & Co, 1950.

Cita MLA (9a ed.)

Leaf, Munro. Grammar Can Be Fun. Ward, Lock & Co, 1950.