APA

Dartnell P., Goodacre C., Octel, Dartnell P. & Goodacre C. (1968). Reduction of exhaust emissions by engine design. London: Octel.

Chicago

Dartnell P.L, Goodacre C.L, Octel, Dartnell P.L and Goodacre C.L. 1968. Reduction of exhaust emissions by engine design. London: Octel.

Harvard

Dartnell P., Goodacre C., Octel, Dartnell P. and Goodacre C. (1968). Reduction of exhaust emissions by engine design. London: Octel.

MLA

Dartnell P.L, Goodacre C.L, Octel, Dartnell P.L and Goodacre C.L. Reduction of exhaust emissions by engine design. London: Octel. 1968.