Relationship designators (RDA) http://id.loc.gov/vocabulary/relators.html Below is a list of the most common relationship designators. Looks like: Willems, Mo,|eauthor. You can use more than one separated by a comma. Willems, Mo,|eauthor,|eillustrator. Creator level Architect Artist Book artist Calligrapher Sculptor Author Librettist Lyricist Rapporteur Screenwriter Cartographer Choreographer Compiler Composer Designer Filmmaker Interviewee Interviewer Inventor Photographer Programmer Associated with work level: Casting director Commissioning body Consultant Director Film director Radio director Television director Director of photography (Previously was cinematographer) Editorial director Host institution Issuing body Medium Organizer Producer Audio producer Film producer Radio producer Television producer Production company Sponsoring body Contributor level: Abridger Animator Arranger of music Art director Audio engineer Mixing engineer Recording engineer Cartographer (expression) Choreographer (expression) Colourist Composer (expression) Costume designer Dubbing director Editor Editor of moving image work Illustrator Letterer Photographer (expression) Interviewee (expression) Interviewer (expression) Lighting designer Make-up director Musical director Performer Actor Voice actor Commentator Conductor Dancer Host Instrumentalist Moderator Narrator On-screen presenter Panelist Puppeteer Singer Speaker Storyteller Instructor Presenter Production designer Recording engineer Recordist Sound designer Special effects provider Stage director Surveyor Transcriber Translator Visual effects provider Writer of supplementary textual content Writer of added commentary Writer of added text Writer of added lyrics Writer of afterword Writer of foreword Writer of introduction Writer of postface Writer of preface .