Cita APA (7th ed.)

CHRISTIE AGATHA. (1970). PASSENGER TO FRANKFURT. HARPER COLLINS PUBLISHERS.

Cita Chicago (17th ed.)

CHRISTIE AGATHA. PASSENGER TO FRANKFURT. NEW DELHI: HARPER COLLINS PUBLISHERS, 1970.

Cita MLA (9th ed.)

CHRISTIE AGATHA. PASSENGER TO FRANKFURT. HARPER COLLINS PUBLISHERS, 1970.