APA

Lee C., Simpson K. & Gerber L.Vegetables as a Major Vitamin A Source in Our Diet. : .

Chicago

Lee C.Y, Simpson K.L and Gerber L.Vegetables as a Major Vitamin A Source in Our Diet. : .

Harvard

Lee C., Simpson K. and Gerber L.Vegetables as a Major Vitamin A Source in Our Diet. : .

MLA

Lee C.Y, Simpson K.L and Gerber L.: . .