24792 Hans-Bernhard Bröcker/Ethan Merritt (ed.): Gnuplot 4.6. Internet 2014, 240p.

24815 Frank Elsner: Einführung in Gnuplot. Univ. Osnabrück 2000, 20p.

23578 Robert Huber/Jan Clauberg: Tutorial on GNU Octave and Gnuplot.
Internet 2008, 18p.

23574 Philipp Janert: Gnuplot in action. Manning 2010, 360p. Eur 24.
Purchasing the print book one gets a free PDF copy. Good idea.

24793 David Kotz: Latex and the Gnuplot plotting program. Internet 2012, 9p.

24851 Lee Phillips: Gnuplot cookbook. Packt 2012, 200p. Eur 28.

29521 Dmitri Rozmanov: Scientific graphics with gnuplot. Internet 2020, 28p.

24816 Jannik Strötgen: Einführung in Gnuplot. Univ. Heidelberg 2010, 24p.

29524 Thomas Williams/Colin Kelley: Gnuplot 5.0 reference manual. Samurai 2015, 250p. Eur 29.

29522 Thomas Williams/Colin Kelley: Gnuplot 5.4. Internet 2019, 330p.

29525 ZZ: Kurzanleitung zum Einstieg in Gnuplot. Internet, 19p.