Analysis of information sources in references of the Wikipedia article "நிர்மலா" in Tamil language version.
{{cite book}}
: Cite has empty unknown parameter: |1=
(help){{cite book}}
: Cite has empty unknown parameter: |1=
(help)As the Nirmalas do not seem to have been adequately mentioned in the Sikh literature before the 19th century, it is difficult to uphold the contention of Giani Gian Singh as historically true, rather it seems highly improbable.