Pérez, E., Müller, E., Soderquist, L., Rodrigues Martínez, H., & Chacón, J. (1999). Breeding soundness evaluation of extensively managed bulls in Costa Rica.
استشهاد بنمط شيكاغوPérez, E., E. Müller, L. Soderquist, H. Rodrigues Martínez, و Jorge Chacón. Breeding Soundness Evaluation of Extensively Managed Bulls in Costa Rica. 1999.
MLA استشهادPérez, E., et al. Breeding Soundness Evaluation of Extensively Managed Bulls in Costa Rica. 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.