(2018). Ubi production guide. IN Rootcrop [column]. Agriculture.
Cita Chicago (17th ed.)"Ubi Production Guide. IN Rootcrop [column]." Agriculture 2018.
Cita MLA (9th ed.)"Ubi Production Guide. IN Rootcrop [column]." Agriculture, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.