De Boriquen al Mundo

file:///C:/Users/Aida1/Downloads/42358-169108-1-PB%20(4).pdf

https://buleria.unileon.es/bitstream/handle/10612/5904/Tesis%20Rosario%20Rivera%20Negr%C3%B3n.pdf?sequence=1

file:///C:/Users/Aida1/Downloads/517-2035-1-PB%20(2).pdf

https://rcsdigital.homestead.com/files/Nueva_epoca_no7_junio1999/Maura_Toro.pdf

https://rcsdigital.homestead.com/files/Vol_XVII_Nm_2_1973/Perez_de_Jesus.pdf

https://books.google.com.pr/books?id=F3acymYLYTQC&pg=PR6&dq=industrias+en+puerto+rico&hl=es-419&sa=X&ved=0ahUKEwjbm5vrmI7cAhXlw1kKHVj1Cj4Q6AEISTAG#v=onepage&q=industrias%20en%20puerto%20rico&f=false

http://d-scholarship.pitt.edu/19572/10/Dissertation_Nashieli_Marcano_aug_5.pdf