APA (7th ed.) Citation

Laing, R. M., & Blackwell, E. W. (1940). Plants of New Zealand (4th (centennial) ed.). Whitcombe and Tombs Ltd..

Chicago Style (17th ed.) Citation

Laing, R. M., and Ellen W. Blackwell. Plants of New Zealand. 4th (centennial) ed. Auckland, London [etc.]: Whitcombe and Tombs Ltd., 1940.

MLA (9th ed.) Citation

Laing, R. M., and Ellen W. Blackwell. Plants of New Zealand. 4th (centennial) ed. Whitcombe and Tombs Ltd., 1940.