Gaya APA

al., E. et al (s.a.). Surgical Treatment Of Hip Arthritis: Reconstruction,replacement, And Revision (1st Ed.). Philadelphia: Saunders Elsevier.

Gaya MLA

al., Et. et al. "Surgical Treatment Of Hip Arthritis: Reconstruction,replacement, And Revision". 1st Ed. Philadelphia: Saunders Elsevier, s.a.. Text.