Singh, A. (1993). Forts and fortifications in India: With special reference to central India. (2nd ed.). Agam Kala.
Citazione stile Chigago Style (17a edizione)Singh, A.P. Forts and Fortifications in India: With Special Reference to Central India. 2nd ed. Delhi: Agam Kala, 1993.
Citatione MLA (9a ed.)Singh, A.P. Forts and Fortifications in India: With Special Reference to Central India. 2nd ed. Agam Kala, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.