Cita APA (7th ed.)
Perdue, A., & Lockwood, R. (2014). Animal cruelty and freedom of speech: When worlds collide. Purdue University Press.
Cita Chicago (17th ed.)
Perdue, Abigail, i Randall Lockwood. Animal Cruelty and Freedom of Speech: When Worlds Collide. West Lafayette, Indiana: Purdue University Press, 2014.
Cita MLA (9th ed.)
Perdue, Abigail, i Randall Lockwood. Animal Cruelty and Freedom of Speech: When Worlds Collide. Purdue University Press, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.