APA (7th ed.) Citation

Billings, W. D. (1972). Plants, man and the ecosystem / by William Dwight Billings (2nd ed.). Macmillan.

Chicago Style (17th ed.) Citation

Billings, William Dwight. Plants, Man and the Ecosystem / by William Dwight Billings. 2nd ed. Macmillan, 1972.

MLA (9th ed.) Citation

Billings, William Dwight. Plants, Man and the Ecosystem / by William Dwight Billings. 2nd ed. Macmillan, 1972.

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