Dyfyniad APA

VIDYA PRAKASHAN. (2012). ENVIRONMENTAL STUDIES - BOOK 2. VIDYA PRAKASHAN MANDIR.

Dyfyniad Arddull Chicago

VIDYA PRAKASHAN. ENVIRONMENTAL STUDIES - BOOK 2. VIDYA PRAKASHAN MANDIR, 2012.

Dyfyniad MLA

VIDYA PRAKASHAN. ENVIRONMENTAL STUDIES - BOOK 2. VIDYA PRAKASHAN MANDIR, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.