Citazione Stile APA (7a Edizione)

Hentig, W. U. v., & Gruber, G. (1988). Propagation of ornamental plants. ISHS.

Citazione stile Chigago Style (17a edizione)

Hentig, W. U. von, e Garry Gruber. Propagation of Ornamental Plants. Wageningen: ISHS, 1988.

Citatione MLA (9a ed.)

Hentig, W. U. von, e Garry Gruber. Propagation of Ornamental Plants. ISHS, 1988.