Lua APA (7ú heag.)

SWARUP R. (1992). ENVIRONMENTAL HEALTH, EDUCATION & PUBLIC UNDERSTANDING. MITTAL PUBLICATIONS.

Lua i Stíl Chicago (17ú heag.)

SWARUP R. ENVIRONMENTAL HEALTH, EDUCATION & PUBLIC UNDERSTANDING. NEW DELHI: MITTAL PUBLICATIONS, 1992.

Lua MLA (9ú heag.)

SWARUP R. ENVIRONMENTAL HEALTH, EDUCATION & PUBLIC UNDERSTANDING. MITTAL PUBLICATIONS, 1992.

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