古多尔 & Lawick-Goodall. (1980). 黑猩猩在召唤: In the shadow of man. 科学出版社.
Dyfyniad Arddull Chicago古多尔 and Lawick-Goodall. 黑猩猩在召唤: In the Shadow of Man. 科学出版社, 1980.
Dyfyniad MLA古多尔 and Lawick-Goodall. 黑猩猩在召唤: In the Shadow of Man. 科学出版社, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.