Puppy defecating in crate

I just got my puppy which is a Yorktese (mixture of Maltese and Yorkshire
terrier) on Thursday August 10th. He is 14 weeks old. I am attempting to
litter box train him. I have read books that say that a dog will not
defecate in his crate but that is the not happening with my puppy. I can
wait for hours and he will not defecate in the box but as soon as I place
him in his crate he defecates and urinates. I have tried blotting his urine
and placing it in the box as well as put a small piece of feces in the
box.and last night he did urinate once , but this morning and afternoon he
is doing in the crate. I am using puppy pads and shredded paper in the
box. Please can anyone offer any suggestions.