Lessing, D. M. (1973). The grass is singing. Heinemann Educational.
Cita Chicago (17th ed.)Lessing, Doris May. The Grass Is Singing. London: Heinemann Educational, 1973.
Cita MLA (9th ed.)Lessing, Doris May. The Grass Is Singing. Heinemann Educational, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.