APA (7th ed.) Citation

Northen, H., & Northen, R. T. (1970). Ingenious kingdom: The remarkable world of plants. Prentice-Hall.

Chicago Style (17th ed.) Citation

Northen, Henry, and Rebecca Tyson Northen. Ingenious Kingdom: The Remarkable World of Plants. Englewood Cliffs, N.J.: Prentice-Hall, 1970.

MLA (9th ed.) Citation

Northen, Henry, and Rebecca Tyson Northen. Ingenious Kingdom: The Remarkable World of Plants. Prentice-Hall, 1970.