APA

Horrobin D. F., Ells K. M., Morse-Fisher N. & Manku M. S. (19910918). The effects of evening primrose oil, safflower oil and paraffin on plasma fatty acid levels in humans: choice of an appropriate placebo for clinical studies on primrose oil. : Prostaglandins, leukotrienes, and essential fatty acids.

Chicago

Horrobin D F, Ells K M, Morse-Fisher N and Manku M S. 19910918. The effects of evening primrose oil, safflower oil and paraffin on plasma fatty acid levels in humans: choice of an appropriate placebo for clinical studies on primrose oil. : Prostaglandins, leukotrienes, and essential fatty acids.

Harvard

Horrobin D. F., Ells K. M., Morse-Fisher N. and Manku M. S. (19910918). The effects of evening primrose oil, safflower oil and paraffin on plasma fatty acid levels in humans: choice of an appropriate placebo for clinical studies on primrose oil. : Prostaglandins, leukotrienes, and essential fatty acids.

MLA

Horrobin D F, Ells K M, Morse-Fisher N and Manku M S. The effects of evening primrose oil, safflower oil and paraffin on plasma fatty acid levels in humans: choice of an appropriate placebo for clinical studies on primrose oil. : Prostaglandins, leukotrienes, and essential fatty acids. 19910918.