Oliveira, Rodrigo Leonardo Costa de, and Willian Alves Cavalcante. Cordel for Teaching Botany: Morphology (2nd Edition). Vol. Volume 1 - Morfologia. Cordel for the Teaching of Botany. UERR Editions, 2020. Accessed July 12, 2025. https://edicoes.uerr.edu.br/index.php/inicio/catalog/book/32.