APA (7th ed.) Citation

Croker, B. M., & Roig de Lluis, L. (1924). Lady Hildegard. [s.n.].

Chicago Style (17th ed.) Citation

Croker, B. M., and Luis Roig de Lluis. Lady Hildegard. Madrid: [s.n.], 1924.

MLA (9th ed.) Citation

Croker, B. M., and Luis Roig de Lluis. Lady Hildegard. [s.n.], 1924.

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