APA (7th ed.) Citation

Richards, B. N. (1978). Introduction to the soil ecosystem (Reprint.). Longman.

Chicago Style (17th ed.) Citation

Richards, B. N. Introduction to the Soil Ecosystem. Reprint. London: Longman, 1978.

MLA (9th ed.) Citation

Richards, B. N. Introduction to the Soil Ecosystem. Reprint. Longman, 1978.

Warning: These citations may not always be 100% accurate.