APA

Tsuchiya K., Hirano S., Okamura M. & Gotoh T. (1980). Emission control of two-stroke motorcycle engines by the butterfly exhaust valve. Warrendale, PA: SAE technical paper 80 09 73.

Chicago

Tsuchiya K, Hirano S, Okamura M and Gotoh T. 1980. Emission control of two-stroke motorcycle engines by the butterfly exhaust valve. Warrendale, PA: SAE technical paper 80 09 73.

Harvard

Tsuchiya K., Hirano S., Okamura M. and Gotoh T. (1980). Emission control of two-stroke motorcycle engines by the butterfly exhaust valve. Warrendale, PA: SAE technical paper 80 09 73.

MLA

Tsuchiya K, Hirano S, Okamura M and Gotoh T. Emission control of two-stroke motorcycle engines by the butterfly exhaust valve. Warrendale, PA: SAE technical paper 80 09 73. 1980.