OCKERMAN, H. (1988). Animal By Product Processing. VCH and Ellis Horword.
Čikaški stil citiranja (17. izdanje)OCKERMAN, HW. Animal By Product Processing. VCH and Ellis Horword, 1988.
MLA način citiranja (8. izdanje)OCKERMAN, HW. Animal By Product Processing. VCH and Ellis Horword, 1988.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.