Parker, G., & Smith, L. M. (1985). The general crisis of the seventeenth century. London: Routledge & Kegan Paul.
Lua i Stíl Chicago (17ú heag.)Parker, Geoffrey, agus Lesley M. Smith. The General Crisis of the Seventeenth Century. London: Routledge & Kegan Paul, 1985.
Lua MLA (8ú heag.)Parker, Geoffrey, agus Lesley M. Smith. The General Crisis of the Seventeenth Century. London: Routledge & Kegan Paul, 1985.
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