Fitz, J. (1892). Sweet potato culture. Giving full instructions from Starting the Plants to Harvesting and Storing the Crop: научное издание.
Chicago-čujuhus (17. p.)Fitz, J. Sweet Potato Culture. Giving Full Instructions from Starting the Plants to Harvesting and Storing the Crop: научное издание. 1892.
MLA-čujuhus (9. p.)Fitz, J. Sweet Potato Culture. Giving Full Instructions from Starting the Plants to Harvesting and Storing the Crop: научное издание. 1892.
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