APA (7th ed.) Citation

Roozen, W. (1948). Flowers in colour (1a. ed.). Collins.

Chicago Style (17th ed.) Citation

Roozen, Walter. Flowers in Colour. 1a. ed. Londres: Collins, 1948.

MLA (9th ed.) Citation

Roozen, Walter. Flowers in Colour. 1a. ed. Collins, 1948.