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+Autor: Tony López Pagán
+Sitio web: lopezpagan.com
+
+Tutorial: ¿Cómo Crear Un Campo de Selección Básico/Intermedio/Avanzado?
+Enlace: 
+https://lopezpagan.com/como-crear-un-campo-de-seleccion-en-html-y-php-nivel-basico/
+https://lopezpagan.com/crear-campo-seleccion-html-php-nivel-intermedio/
+https://lopezpagan.com/crear-campo-seleccion-htmljson-php-nivel-avanzado/
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