Cita APA (7th ed.)

Ripka, Z. (2010). ISTA handbook on flower seed testing (1a. ed.). ISTA.

Cita Chicago (17th ed.)

Ripka, Zita. ISTA Handbook on Flower Seed Testing. 1a. ed. Zurich: ISTA, 2010.

Cita MLA (9th ed.)

Ripka, Zita. ISTA Handbook on Flower Seed Testing. 1a. ed. ISTA, 2010.