Ramanujam, G. (1967). From the babul tree: Story of Indian labour. Indian National Trade Union Congress.
Citazione stile Chigago Style (17a edizione)Ramanujam, G. From the Babul Tree: Story of Indian Labour. New Delhi: Indian National Trade Union Congress, 1967.
Citatione MLA (8a ed.)Ramanujam, G. From the Babul Tree: Story of Indian Labour. Indian National Trade Union Congress, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.