kind of type of 谓语的单数复数的问题

kind of type of 谓语的单数复数的问题
a kind of books 谓语是is 还是are?
如果是kinds of 但是of后加的是单数名词或者不可数 谓语是单数还是复数?
types of the disease 谓语是单数还是负数 看types还是该看disease?