APA
Döbereiner J., Day J. & Dart P. (1973). Rhizosphere associations between grasses and nitrogen-fixing bacteria. United Kingdom: Pergamon Press.
Chicago
Döbereiner J, Day J.M and Dart P.J. 1973. Rhizosphere associations between grasses and nitrogen-fixing bacteria. United Kingdom: Pergamon Press.
Harvard
Döbereiner J., Day J. and Dart P. (1973). Rhizosphere associations between grasses and nitrogen-fixing bacteria. United Kingdom: Pergamon Press.
MLA
Döbereiner J, Day J.M and Dart P.J. Rhizosphere associations between grasses and nitrogen-fixing bacteria. United Kingdom: Pergamon Press. 1973.