Professional 's. (2019). The Environment Act 1986 E-13. Professional Book publishers.
Chicago-referens (17:e uppl.)Professional 's. The Environment Act 1986 E-13. Delhi: Professional Book publishers, 2019.
MLA-referens (9:e uppl.)Professional 's. The Environment Act 1986 E-13. Professional Book publishers, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.