Weste and Harris in "CMOS VLSI Design" describe the CMOS trigger as follows:
Let's call the transistors in the first columns from bottom to top M1,M2; M4,M6 and the transistors in the second column M3 and M5.
Note that M3 and M5 are indicated as weak, implying that their sizes are smaller than the other transistors.
On the other hand, Jacob Baker in CMOS Circuit Design, Layout, and Simulation it is implied that the same transistors must be much larger for having hysteresis. For example, in example 18.1. he derives W1=10u, W3=22.5u, W6=20u, W5=26u; W2 and W4 larger than the other transistors.
Which version is now correct?