APA (7th ed.) Citation

Shell Company of East Africa, Ltd. (1968). Guide to some of East Africa's flowering trees and shrubs. [publisher not identified].

Chicago Style (17th ed.) Citation

Shell Company of East Africa, Ltd. Guide to Some of East Africa's Flowering Trees and Shrubs. [Nairobi?]: [publisher not identified], 1968.

MLA (9th ed.) Citation

Shell Company of East Africa, Ltd. Guide to Some of East Africa's Flowering Trees and Shrubs. [publisher not identified], 1968.