Singh, J. (for Degree, Diploma, A M.I.E and Field Engineers): Gurcharan Singh and Jagdish Singh. c1999.
Citazione stile Chigago Style (17a edizione)Singh, Jagdish. (for Degree, Diploma, A M.I.E and Field Engineers): Gurcharan Singh and Jagdish Singh. Standard Publishers Distributors: c1999.
Citatione MLA (9a ed.)Singh, Jagdish. (for Degree, Diploma, A M.I.E and Field Engineers): Gurcharan Singh and Jagdish Singh. c1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.