Cita APA (7th ed.)

Beardsworth, J. (2007). Adobe Photoshop lightroom essentials. ILEX.

Cita Chicago (17th ed.)

Beardsworth, John. Adobe Photoshop Lightroom Essentials. East Sussex, [England]: ILEX, 2007.

Cita MLA (9th ed.)

Beardsworth, John. Adobe Photoshop Lightroom Essentials. ILEX, 2007.