APA (7th ed.) Citation

Sharma, R., & Stern, V. (1980, February). Blue alfalfa aphid: Economic threshold levels in southern California. California Agriculture.

Chicago Style (17th ed.) Citation

Sharma, R., and V. Stern. "Blue Alfalfa Aphid: Economic Threshold Levels in Southern California." California Agriculture Feb. 1980.

MLA (9th ed.) Citation

Sharma, R., and V. Stern. "Blue Alfalfa Aphid: Economic Threshold Levels in Southern California." California Agriculture, Feb. 1980.

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