Gaya APA

CALLAWAY, T, R., RICKE, S, C. (2012). DIRECT-FED MICROBIALS AND PREBIOTICS FOR ANIMALS: SCIENCE AND MECHANISMS OF ACTION . NEW YORK: Springer.

Gaya MLA

CALLAWAY, TODD, R.., RICKE, STEVEN, C.. "DIRECT-FED MICROBIALS AND PREBIOTICS FOR ANIMALS: SCIENCE AND MECHANISMS OF ACTION". NEW YORK: Springer, 2012. Text.