I am making my father a v-neck cardigan for Christmas. I am following a pattern from Ann Budd's Handy Book of Sweater Patterns. I'm stuck

I finished both sleeves and am getting ready to attatch them. The pattern says:
Join all pieces as foll:
With RS facing, knit across 31 sts of the right from, pm
(did that), knit across 42sts of right sleeve, pm (
huh? 
), knit across 62 sts of back, pm, knit across 42 sts of the left sleeve, pm, knit across 31 sts of left front.
Here's my question, what does the pattern mean with it says "knit across 42 sts of right sleeve"? How do I attach the sleeves?
Please help! I need to have this finished by Sunday!
Thanks
