Cita APA

Nelsen, C. J., Murtaugh, M. P., & Faaberg, K. S. (1999). Porcine Reproductive and Respiratory Syndrome Virus Comparison: Divergent Evolution on Two Continents. American Society for Microbiology.

Chicago Style Citation

Nelsen, Chris J., Michael P. Murtaugh, i Kay S. Faaberg. Porcine Reproductive and Respiratory Syndrome Virus Comparison: Divergent Evolution On Two Continents. American Society for Microbiology, 1999.

Cita MLA

Nelsen, Chris J., Michael P. Murtaugh, i Kay S. Faaberg. Porcine Reproductive and Respiratory Syndrome Virus Comparison: Divergent Evolution On Two Continents. American Society for Microbiology, 1999.