@book { ChildlessMarriagesandChildadoptionamongtheIgbo,
    title = "Childless Marriages and Child adoption among the Igbo",
    author = "John Kachikwulu {Ekwunife}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17002",
    url = "https://www.peterlang.com/document/1111398"
}