Sullivan, C. (2014). Drawing the landscape: The art of hand drawing and digital representation (Fourth edition.). John Wiley & Sons, Inc.
Chicago Style aipamenaSullivan, Chip. Drawing the Landscape: The Art of Hand Drawing and Digital Representation. Fourth edition. Hoboken, New Jersey: John Wiley & Sons, Inc, 2014.
MLA aipamenaSullivan, Chip. Drawing the Landscape: The Art of Hand Drawing and Digital Representation. Fourth edition. John Wiley & Sons, Inc, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.