Bibliography and student work on the respiratory system

Tonsillitis. (2017, April 21). Wikipedia, The Free Encyclopedia. Consultation date: 18:53, May 6, 2017 from https://es.wikipedia.org/w/index.php?title=Tonsillitis&oldid=98519843 .
Enema. (2018, March 8). Wikipedia, The Free Encyclopedia. Consultation date: 12:02, May 12, 2018 from https://es.wikipedia.org/w/index.php?title=Enema&oldid=106073882 .
Edema. (2019, December 28). Wikipedia, The Free Encyclopedia. Consultation date: 10:36, January 18, 2020 from https://es.wikipedia.org/w/index.php?title=Edema&oldid=122346578 .
The general organization of the human body. (s. f.). Retrieved May 8, 2013, from http://recursostic.educacion.es/secundaria/edad/3esobiologia/3quincena8/index_3quincena8.htm
Biosphere Project. (s. f.). Retrieved May 8, 2013, from http://recursostic.educacion.es/ciencias/biosfera/web/alumno/3ESO/diges/index.htm
Biosphere Project. (s. f.). Retrieved July 11, 2013, from http://recursostic.educacion.es/ciencias/biosfera/web/alumno/1bachillerato/animal/contenidos8.htm
Tuberculosis. (2019, June 11). Wikipedia, The Free Encyclopedia. Consultation date: 17:05, June 13, 2019 from https://es.wikipedia.org/w/index.php?title=Tuberculosis&oldid=116637802.