APA

Downs D., Griffiths S., Wheeler R., Octel, Downs D., Griffiths S. & Wheeler R. (1961). The part played by the preparational stage in determining lead anti knock effectiveness. London: Octel.

Chicago

Downs D, Griffiths S.T, Wheeler R.W, Octel, Downs D, Griffiths S.T and Wheeler R.W. 1961. The part played by the preparational stage in determining lead anti knock effectiveness. London: Octel.

Harvard

Downs D., Griffiths S., Wheeler R., Octel, Downs D., Griffiths S. and Wheeler R. (1961). The part played by the preparational stage in determining lead anti knock effectiveness. London: Octel.

MLA

Downs D, Griffiths S.T, Wheeler R.W, Octel, Downs D, Griffiths S.T and Wheeler R.W. The part played by the preparational stage in determining lead anti knock effectiveness. London: Octel. 1961.