Lua APA (7ú heag.)

CHRISTIE, A. (1993). POIROT'S EARLY CASES. HARPER COLLINS PUBLISHERS.

Lua i Stíl Chicago (17ú heag.)

CHRISTIE, AGATHA. POIROT'S EARLY CASES. LONDON: HARPER COLLINS PUBLISHERS, 1993.

Lua MLA (9ú heag.)

CHRISTIE, AGATHA. POIROT'S EARLY CASES. HARPER COLLINS PUBLISHERS, 1993.

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