Analysis of information sources in references of the Wikipedia article "مشاهده" in Persian language version.
{{cite book}}: Check |isbn= value: invalid character (help)نگهداری CS1: نقطهگذاری اضافه (link){{cite book}}: |first= missing |last= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help){{cite book}}: Check |isbn= value: length (help); Unknown parameter |coauthors= ignored (|author= suggested) (help){{cite book}}: Unknown parameter |fecha= ignored (|date= suggested) (help); Unknown parameter |páginas= ignored (|pages= suggested) (help){{cite book}}: Unknown parameter |año= ignored (|date= suggested) (help); Unknown parameter |páginas= ignored (|pages= suggested) (help)