@book { ConceptualChallengesforEnvironmentalEducation,
    title = "Conceptual Challenges for Environmental Education",
    author = "Christopher {Schlottmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1109047"
}