@Book{OL12560110M,
    title: {Beat About the Bush},
    author: {Trevor Carnaby},
    publisher: {Jacana Media},
    year: {2008},
}

@Work{OL4572678W,
    title: {Frogs and frogging in Southern Africa},
    author: {Vincent Carruthers},
    first_publish_year: {2001}
}

@Work{OL1920565W,
    title: {Hidden wonders},
    author: {Dan Lieberman},
    first_publish_year: {2007}
}

@Work{OL9028474W,
    title: {Field guide to reptiles of Southern Africa},
    author: {Graham Alexander},
    first_publish_year: {2007}
}

@Author{OL3148267A,
    name: {Graham Alexander},
}