APA-viite

D B Crighton, G R Foxcroft, & N B Haymer. (1978). Control of ovulation. Butterworths.

Chicago-tyylinen lähdeviittaus

D B Crighton, G R Foxcroft, ja N B Haymer. Control of Ovulation. Butterworths, 1978.

MLA-viite

D B Crighton, et al. Control of Ovulation. Butterworths, 1978.