Gaya APA

Spences, C, A., , . (2004). Mad cows and cannibals: a guide to the transmissible spongiform encephalopathies . New Jersey: .

Gaya MLA

Spences, Charlotte, A., , . "Mad cows and cannibals: a guide to the transmissible spongiform encephalopathies". New Jersey: , 2004. Text.