@book { ChildrenCount,
    title = "Children Count",
    subtitle = "Exploring What is Possible in a Classroom with Mathematics and Children",
    author = "Mary M. {Stordy}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-1385-7",
    url = "https://www.peterlang.com/document/1118261"
}