Cita APA (7a ed.)

Dissing, H. (1966). The genus Helvella in Europe: With special emphasis on the species found in Norden. [s.n.].

Cita Chicago Style (17a ed.)

Dissing, Henry. The Genus Helvella in Europe: With Special Emphasis on the Species Found in Norden. København: [s.n.], 1966.

Cita MLA (9a ed.)

Dissing, Henry. The Genus Helvella in Europe: With Special Emphasis on the Species Found in Norden. [s.n.], 1966.