MLA

Irving, Helen, et al. Plant Signaling Peptides. Springer Berlin Heidelberg, 2012.

APA

Irving, H., & Gehring, C., Irving, H. R, & Gehring, C. (2012). Plant Signaling Peptides. Springer Berlin Heidelberg.

Chicago

Irving, Helen, Christoph Gehring, Helen R Irving, and Chris Gehring. Plant Signaling Peptides. : Springer Berlin Heidelberg, 2012.