Cita APA (7th ed.)

Armstrong, E. C. R. (1913). Irish Seal-Matrices and seals: By E. C. R. Armstrong. Hodges & Figgis.

Cita Chicago (17th ed.)

Armstrong, E. C. R. Irish Seal-Matrices and Seals: By E. C. R. Armstrong. Dublin: Hodges & Figgis, 1913.

Cita MLA (8th ed.)

Armstrong, E. C. R. Irish Seal-Matrices and Seals: By E. C. R. Armstrong. Hodges & Figgis, 1913.

Atenció: Aquestes cites poden no estar 100% correctes.