Merge pull request 'remove unneeded bibliography styleand add missing package' (#6) from update into master

Reviewed-on: #6

main.tex

@@ -1,7 +1,6 @@
 \documentclass[
     spanish,
-    12pt,
-    bibliography=totocnumbered]{article}
+    12pt]{article}
 
 \usepackage[T1]{fontenc}
 \usepackage[utf8]{inputenc}
@@ -11,6 +10,7 @@
     style=apa
     ]{biblatex}
 \addbibresource{references.bib}
+\usepackage{csquotes}
 \usepackage{graphicx}
 \usepackage{mathptmx}
 \usepackage{array}