APA (7th ed.) Citation

Johnston, E. S. (1938). Plant growth in relation to wave-length balance. The Smithsonian Institution.

Chicago Style (17th ed.) Citation

Johnston, Earl Steinford. Plant Growth in Relation to Wave-length Balance. City of Washington: The Smithsonian Institution, 1938.

MLA (9th ed.) Citation

Johnston, Earl Steinford. Plant Growth in Relation to Wave-length Balance. The Smithsonian Institution, 1938.