Cita APA

Richardson, J. D., Voyles, C. R., & Polk, H. C. (1982). Letters to the Editor.

Chicago Style Citation

Richardson, J. David, C. R. Voyles, i Hiram C. Polk. Letters to the Editor. 1982.

Cita MLA

Richardson, J. David, C. R. Voyles, i Hiram C. Polk. Letters to the Editor. 1982.