APA (7th ed.) Citation

Halda, J. J., Waddick, J. W., & Haldová, J. (2004). The genus Paeonia. Timber Press in association with Heartland Peony Society.

Chicago Style (17th ed.) Citation

Halda, Josef J., James W. Waddick, and Jarmila Haldová. The Genus Paeonia. Portland, Or.: Timber Press in association with Heartland Peony Society, 2004.

MLA (9th ed.) Citation

Halda, Josef J., et al. The Genus Paeonia. Timber Press in association with Heartland Peony Society, 2004.