Cita APA (7a ed.)
Sanabria. Sanabria Air Mail Catalogue: North America 1995.
Cita Chicago Style (17a ed.)
Sanabria. Sanabria Air Mail Catalogue: North America 1995.
Cita MLA (9a ed.)
Sanabria. Sanabria Air Mail Catalogue: North America 1995.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.