Cita APA (7th ed.)

DAVID ALLAN LAW. (1920). HEAT ENGINES. LONG MAN GROUP.

Cita Chicago (17th ed.)

DAVID ALLAN LAW. HEAT ENGINES. LONDON: LONG MAN GROUP, 1920.

Cita MLA (9th ed.)

DAVID ALLAN LAW. HEAT ENGINES. LONG MAN GROUP, 1920.