@book { ImmunologicalandEnvironmentalStudiesOnGiardiaDuodenalis,
    title = "Immunological and Environmental Studies On Giardia Duodenalis",
    author = "Alyaa {Farid} and Azza {El Amir}",
    year = "2015",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/308703"
}