@Book{OL42356518M,
    title: {The Sword of Summer},
    author: {Rick Riordan},
    publisher: {Puffin},
    year: {2015},
}

@Book{OL27937851M,
    title: {The Ship of the Dead},
    author: {Rick Riordan and John Rocco},
    publisher: {Disney Hyperion},
    year: {2017},
}

@Book{OL42339108M,
    title: {The Hammer of Thor},
    author: {Rick Riordan},
    publisher: {Disney - Hyperion},
    year: {2016},
}

@Book{OL26967683M,
    title: {9 from the Nine Worlds},
    author: {Rick Riordan},
    publisher: {Hyperion Books},
    year: {2018},
    place: {Los Angeles},
}

@Book{OL29320635M,
    title: {Hotel Valhalla Guide to the Norse Worlds},
    author: {Rick Riordan},
    publisher: {Puffin},
    year: {2016},
}

@Author{OL30765A,
    name: {Rick Riordan},
    birth_date: {5 Jun 1964}
}