Guru Nanak: The First Sikh Guru Volumes 1 to 5

Bhagat Namdev: God's Own Voice

Bhagat Ravi Das: God's Humble Saint

Baba Deep Singh: The Great Sikh Martyr and Scholar

Guru Har Rai: The Seventh Sikh Guru Vol 1 & 2

Guru Arjan Dev: The Fifth Sikh Guru

Janamsakhi Tradition: An Analytical Study by Kirpal Singh

Guru Amar Das: The Third Sikh Guru

The First Sikh: The Life and Legacy of Guru Nanak by Nikky-Guninder Kaur Singh