SWARUP R. (1992). AN INTRODUCTION TO MAN & HIS ENVIRONMENT. MITTAL PUBLICATIONS.
Citazione stile Chigago Style (17a edizione)SWARUP R. AN INTRODUCTION TO MAN & HIS ENVIRONMENT. NEW DELHI: MITTAL PUBLICATIONS, 1992.
Citatione MLA (9a ed.)SWARUP R. AN INTRODUCTION TO MAN & HIS ENVIRONMENT. MITTAL PUBLICATIONS, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.