Luna-Cavazos, M., A. Romero-Manzanares, and E. García-Moya. “Morphological Variation in Cones and Seeds of Two Species of Pinyon Pines Distributed in a Latitudinal Gradient of Mexican Highlands”. Revista Bosque, vol. 45, no. 3, Jan. 2025, pp. 413-25, doi:10.4067/S0717-92002024000300413.