APA-referens (7:e uppl.)

Squire, D. (1995). Annuals and biennials: An essential guide to these versatile and indispensable plants. Tiger Books International.

Chicago-referens (17:e uppl.)

Squire, David. Annuals and Biennials: An Essential Guide to These Versatile and Indispensable Plants. London: Tiger Books International, 1995.

MLA-referens (9:e uppl.)

Squire, David. Annuals and Biennials: An Essential Guide to These Versatile and Indispensable Plants. Tiger Books International, 1995.

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