APA (7th ed.) Citation

Spangler, R. L. (1968). Effects of herbicide combinations for broad spectrum weed control in ornamental plantings. Purdue University.

Chicago Style (17th ed.) Citation

Spangler, Ronald L. Effects of Herbicide Combinations for Broad Spectrum Weed Control in Ornamental Plantings. Lafayette: Purdue University, 1968.

MLA (9th ed.) Citation

Spangler, Ronald L. Effects of Herbicide Combinations for Broad Spectrum Weed Control in Ornamental Plantings. Purdue University, 1968.