APA (7th ed.) Citation

Gruber, F. X., Lecumberri Labairu, J., Francisco de Lazcano, & Recondo, C. (1948). Heilige nacht.

Chicago Style (17th ed.) Citation

Gruber, Franz Xaver, Jerónimo Lecumberri Labairu, Francisco de Lazcano, and Cirilo Recondo. Heilige Nacht. Pamplona, 1948.

MLA (9th ed.) Citation

Gruber, Franz Xaver, et al. Heilige Nacht. 1948.