Cita APA (7a ed.)

Krüssmann, G. (1970). Rhododendrons: Their history, geographical distribution, hybridization and culture. Ward Lock.

Cita Chicago Style (17a ed.)

Krüssmann, Gerd. Rhododendrons: Their History, Geographical Distribution, Hybridization and Culture. London: Ward Lock, 1970.

Cita MLA (8a ed.)

Krüssmann, Gerd. Rhododendrons: Their History, Geographical Distribution, Hybridization and Culture. Ward Lock, 1970.