APA (7th ed.) Citation

Zavila O, Chmelík R, & Trčka M. Fire-fighting Systems in Aircraft in the Service of Czechoslovakia and the Czech Republic since 1948.

Chicago Style (17th ed.) Citation

Zavila O, Chmelík R, and Trčka M. Fire-fighting Systems in Aircraft in the Service of Czechoslovakia and the Czech Republic Since 1948.

MLA (9th ed.) Citation

Zavila O, et al. Fire-fighting Systems in Aircraft in the Service of Czechoslovakia and the Czech Republic Since 1948.