APA (7th ed.) Citation

Rutgers, A., & Rogers, C. H. (1967). Budgerigars in colour: Their care and breeding. Blandford Press.

Chicago Style (17th ed.) Citation

Rutgers, Abram, and Cyril H. Rogers. Budgerigars in Colour: Their Care and Breeding. London: Blandford Press, 1967.

MLA (9th ed.) Citation

Rutgers, Abram, and Cyril H. Rogers. Budgerigars in Colour: Their Care and Breeding. Blandford Press, 1967.