How to use std::async on a member function?

How can I operate std::async call on a member function?

Example:

class Person{
public:
    void sum(int i){
        cout << i << endl;
    }
};

int main(int argc, char **argv) {
    Person person;
    async(&Person::sum,&person,4);
}

I want to call to sum async.

Person p;
call async to p.sum(xxx)

I didnt figure out if i can do it with std::async. Dont want to use boost. Looking for a one line async call way.