APA (7e ed.) Bronvermelding

SWARUP R. (1992). AN INTRODUCTION TO MAN & HIS ENVIRONMENT. MITTAL PUBLICATIONS.

Chicago (17e ed.) Bronvermelding

SWARUP R. AN INTRODUCTION TO MAN & HIS ENVIRONMENT. NEW DELHI: MITTAL PUBLICATIONS, 1992.

MLA (9e ed.) Bronvermelding

SWARUP R. AN INTRODUCTION TO MAN & HIS ENVIRONMENT. MITTAL PUBLICATIONS, 1992.