APA aipamena

Ortuno, A., Chacón, J., BonDurant, R., Noordhuizen, J., Perez, E., Conrad, P. A., & Hird, D. (1992). Prevalence and risk factors for Trichomonas foetus infection in cattle in northeastern Costa Rica.

Chicago Style aipamena

Ortuno, Ana, Jorge Chacón, Robert BonDurant, Jos Noordhuizen, Enrique Perez, Patricia A. Conrad, y David Hird. Prevalence and Risk Factors for Trichomonas Foetus Infection in Cattle in Northeastern Costa Rica. 1992.

MLA aipamena

Ortuno, Ana, et al. Prevalence and Risk Factors for Trichomonas Foetus Infection in Cattle in Northeastern Costa Rica. 1992.