\documentclass[12pt,twoside]{report}
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{graphicx}
\graphicspath{ {images/} }
\usepackage{caption}
\usepackage{subcaption}
\usepackage[a4paper,width=150mm,top=25mm,bottom=25mm,bindingoffset=6mm]{geometry}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage[authoryear,longnamesfirst]{natbib}
\usepackage[T1]{fontenc}
\usepackage{ragged2e}
\usepackage{bm}
\usepackage{nicefrac}
\usepackage[]{algorithm2e}
\usepackage{lscape}
\usepackage{float}
\usepackage{hyperref}
\begin{document}
\input{titlepage}
\input{abstract}
\chapter*{Dedicatoria}
To mum and dad
\chapter*{Declaración}
I declare that..
\chapter*{Agradecimientos}
I want to thank...
\tableofcontents
\listoffigures
\listoftables
\chapter{Introducción}
\input{introduction}
\chapter{Estado del Arte}
\input{chapter02}
\chapter{Objetivo 1}
\input{chapter03}
\chapter{Objetivo 2}
\input{chapter04}
\chapter{Objetivo 3}
\input{chapter05}
\chapter{Conclusion}
\input{conclusion}
\medskip
\bibliography{references,mendeley}
\bibliographystyle{apalike}
\end{document}