Dyfyniad APA

ebrary, Inc, & Johnson, C. C. (2011). Mapping the chemical environment of urban areas. Wiley-Blackwell.

Dyfyniad Arddull Chicago

ebrary, Inc, and Christopher C. Johnson. Mapping the Chemical Environment of Urban Areas. Chichester, West Sussex ; Hoboken, NJ: Wiley-Blackwell, 2011.

Dyfyniad MLA

ebrary, Inc, and Christopher C. Johnson. Mapping the Chemical Environment of Urban Areas. Wiley-Blackwell, 2011.

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