@Book{OL2230999M,
    title: {Ground covers},
    author: {Sunset Books},
    publisher: {Sunset Pub. Corp.},
    year: {1991},
    place: {Menlo Park, Calif},
}

@Book{OL975403M,
    title: {Dead snails leave no trails},
    author: {Loren Nancarrow},
    publisher: {Ten Speed Press},
    year: {1996},
    place: {Berkeley, Calif},
}

@Work{OL16032131W,
    title: {Landscaping for modern living},
    first_publish_year: {1958}
}