There are a couple of typos in author_position() here: https://github.com/jkeirstead/scholar/blob/5a5e04151ace7fe04cc903f29e50602e3b7fdf65/R/scholar.r#L252 https://github.com/jkeirstead/scholar/blob/5a5e04151ace7fe04cc903f29e50602e3b7fdf65/R/scholar.r#L255 ``` } else{ pectentage <- NA } } else{ pectentage <- NA ``` I think both instances of `pectentage` should refer to the object `percentage` instead.