Depends upon how technical and anal you want to be, and who your audience is. Technically speaking, AK-47s and AKMs were only made in Russia. Most of the satellite and client states had their own model designations for the design: for example, a Romanian rifle would be the PM md.63, a Chinese rifle would be a Type-56, and so forth. In fact, the Romanian AK design is probably among the closest to the original Russian design; it's virtually identical.
To use the car analogy that seems to be proliferating in this thread, look at it this way: Mercedes-Benz, for example, makes the E-class sedan. They come in different trim levels, but they're all considered E-class cars. So, both the E350 and the E550 are E-class, but the E350 is not an E550 and vice versa. Accordingly, the WASR should be considered an AK rifle, but not necessarily an "AK-47" - it's sort of like a different trim level than the AK-47 or AKM.
It would be absurd to say the WASR is not an "AK" - it has the same barrel, trunnions, gas system, stock, safety, bolt, bolt carrier, etc.; the cosmetics and most of the working parts are effectively the same. It just has a slightly different trigger group and a slightly different receiver (primarily because most were designed to take single stack mags and then modified upon importation).
Of course, most people don't know what a WASR is, or even an AKM. They do know what an AK-47 is and can picture one with little additional description. Therefore, I don't think there's anything wrong with telling the uninitiated that it's an "AK-47" - so long as you emphasize the fact that it's semi-automatic.