APA-viite

Rebers, M. (1994). Gibberellins and the cold requirement of tulip. Bulb Research Centre.

Chicago-tyylinen lähdeviittaus

Rebers, Mariken. Gibberellins and the Cold Requirement of Tulip. Netherlands: Bulb Research Centre, 1994.

MLA-viite

Rebers, Mariken. Gibberellins and the Cold Requirement of Tulip. Bulb Research Centre, 1994.