Santos, A. P. (1957). Etude in blue. Santos Cottage.
Lua i Stíl Chicago (17ú heag.)Santos, Alfonso Pablo. Etude in Blue. Quezon City: Santos Cottage, 1957.
Lua MLA (9ú heag.)Santos, Alfonso Pablo. Etude in Blue. Santos Cottage, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.