Frankly, this article might be better because it's very short and encourages you to go out and put it into practice immediately. Which is arguably more valuable than reading an entire book to make the same point.
I wouldn't say that this article and the book just "make the same point". Zerubavel devotes an entire chapter to explain how to get a good estimate of the time required to complete the project, another chapter provides tips about how to track progress efficiently, etc.
