@Book{OL3126969M,
    title: {The ha ha bonk book},
    author: {Janet Ahlberg},
    publisher: {Puffin Books},
    year: {1982},
    place: {Harmondsworth, Middlesex, England},
}

@Author{OL67988A,
    name: {Janet Ahlberg},
    birth_date: {1944}
    , death_date: {1994}
}