Hızlı yanıt: kod örneği
Although both usages are fairly common and unlikely to draw much attention, I would favor was written by in almost all cases. As you say, present tense is often used when discussing the plot of a work, because it helps place the reader "in the moment" as the plot is unfolding. When discussing the creation of the work, however, we speak from the point of view of the real world, rather than of the plot, and in the real world the work was created in the past and is best referred to using the past tense.Is written by is more appropriate when applied to an ongoing series of works, although I would probably feel most comfortable using it to discuss a true periodical work, as opposed to (e.g.) a series of discrete novels: "Mary Worth is written by Karen Moy and illustrated by Joe Giella."