APA (7th ed.) Citation

Kunkel, G., & Kunkel, M. A. (1978). Flowering trees in subtropical gardens. Junk.

Chicago Style (17th ed.) Citation

Kunkel, Gunther, and Mary Anne Kunkel. Flowering Trees in Subtropical Gardens. The Hague [etc.]: Junk, 1978.

MLA (9th ed.) Citation

Kunkel, Gunther, and Mary Anne Kunkel. Flowering Trees in Subtropical Gardens. Junk, 1978.