APA (7th ed.) Citation

Longbrake, T., Larsen, J., Cotner, S., & Roberts, R. (1970). Keys to profitable lettuce production. Texas A&M University, Agricultural Extension Service.

Chicago Style (17th ed.) Citation

Longbrake, Tom, John Larsen, Sam Cotner, and Roland Roberts. Keys to Profitable Lettuce Production. College Station, [Texas]: Texas A&M University, Agricultural Extension Service, 1970.

MLA (9th ed.) Citation

Longbrake, Tom, et al. Keys to Profitable Lettuce Production. Texas A&M University, Agricultural Extension Service, 1970.