Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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