Richards, O. W. (1977). Imms' General Textbook of Entomology Volume 1 (10th ed.). Chapman & Hall.
Cita Chicago (17th ed.)Richards, O. W. Imms' General Textbook of Entomology Volume 1. 10th ed. London: Chapman & Hall, 1977.
Cita MLA (9th ed.)Richards, O. W. Imms' General Textbook of Entomology Volume 1. 10th ed. Chapman & Hall, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.