Ellefson, W., Zach, L., & Sullivan, D. M. (2013). Improving import food safety. Wiley-Blackwell.
Lua i Stíl Chicago (17ú heag.)Ellefson, Wayne, Lorna Zach, agus Darryl M. Sullivan. Improving Import Food Safety. Ames, Iowa: Wiley-Blackwell, 2013.
Lua MLA (9ú heag.)Ellefson, Wayne, et al. Improving Import Food Safety. Wiley-Blackwell, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.