@book { KrashensMonitorTheoryontheRelationbetweenSpontaneousandGuidedLanguageLearning,
    title = "Krashen's Monitor Theory on the Relation between Spontaneous and Guided Language Learning",
    author = "Anja {Benthin}",
    year = "2015",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/299196"
}