APA (7th ed.) Citation

Permanyer, R., & Riba, C. (1955). L'Ombra perdurable. Óssa Menor.

Chicago Style (17th ed.) Citation

Permanyer, Ricard, and Carles Riba. L'Ombra Perdurable. Barcelona: Óssa Menor, 1955.

MLA (9th ed.) Citation

Permanyer, Ricard, and Carles Riba. L'Ombra Perdurable. Óssa Menor, 1955.

Warning: These citations may not always be 100% accurate.