al.], P. B. K. .. [. Plants their biology and importance. Harper and Row Publishers.
Chicago Style (17th ed.) Citational.], Peter B. Kaufman ... [et. Plants Their Biology and Importance. Harper and Row Publishers.
MLA (8th ed.) Citational.], Peter B. Kaufman ... [et. Plants Their Biology and Importance. Harper and Row Publishers.
Warning: These citations may not always be 100% accurate.